HR 5104
Preventing HEAT Illness and Deaths Act of 2025
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Bill overview
The Preventing HEAT Illness and Deaths Act of 2025 aims to reduce the health risks associated with extreme heat by establishing the National Integrated Heat Health Information System and a related interagency committee. The bill requires a study on extreme heat information and response, and it creates financial assistance programs to help communities prepare for and mitigate the impacts of heat events, particularly in vulnerable areas. It also defines key terms related to heat and heat-related health risks.
Key provisions
- Establishes the National Integrated Heat Health Information System within NOAA.
- Creates a National Integrated Heat Health Information System Interagency Committee to coordinate federal efforts.
- Requires a study on extreme heat information and response to be conducted by the National Academies of Sciences, Engineering, and Medicine.
- Authorizes financial assistance programs for communities to implement heat resilience projects.
- Prioritizes funding for communities with environmental justice concerns and low-income communities.
- Defines key terms such as ‘extreme heat,’ ‘heat event,’ and ‘heat-health.’
- Establishes a strategic plan for the National Integrated Heat Health Information System.
- Directs the National Integrated Heat Health Information System to improve data collection and accessibility.
Who is affected
- Adults older than 65 years of age
- Pregnant people
- Young children
- Low-income communities
Sponsors
Official sponsors from legislative records.
Primary sponsor
Cosponsors
Eleanor Holmes [D-DC-At Large] Norton
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119th CONGRESS — 1st Session
H. R. 5104
IN THE HOUSE OF REPRESENTATIVES
A BILL
To reduce the health risks of heat by establishing the National Integrated Heat Health Information System within the National Oceanic and Atmospheric Administration and the National Integrated Heat Health Information System Interagency Committee to improve extreme heat preparedness, planning, and response, requiring a study, and establishing financial assistance programs to address heat effects, and for other purposes.
This Act may be cited as the Preventing Health Emergencies And Temperature-related Illness and Deaths Act of 2025 Preventing HEAT Illness and Deaths Act of 2025
or the
.
In this Act:
The term community with environmental justice concerns means a community with significant representation of communities of color, low-income communities, or Tribal and indigenous communities, that experiences, or is at risk of experiencing, higher or more adverse human health or environmental effects as compared to other communities.
The term extreme heat means heat that substantially exceeds local climatological norms in terms of any combination of the following:
Duration.
Intensity.
Season length.
Frequency.
The term heat means any combination of the atmospheric parameters associated with modulating human thermoregulation, such as air temperature, humidity, solar exposure, and wind speed.
The term heat event means an occurrence of extreme heat of 2 days or more that may have heat-health implications.
The term heat-health means health effects to humans from heat, during or outside of heat events, including from vulnerability and exposure, or the risk of such effects.
The term Indian Tribe has the meaning given that term in section 4 of the Indian Self-Determination and Education Assistance Act (25 U.S.C. 5304).
The term Native Hawaiian organization has the meaning given that term in section 6207 of the Elementary and Secondary Education Act of 1965 (20 U.S.C. 7517).
The term planning means activities performed across timescales (including days, weeks, months, years, and decades) with scenario-based, probabilistic or deterministic information to identify and take actions to proactively mitigate heat-health risks from increased frequency, duration, and intensity of heat waves and increased ambient temperature.
The term preparedness means activities performed across timescales (including days, weeks, months, years, and decades) with decision support tools to manage risk in advance of a heat event and increased ambient temperature.
The term response means activities performed during and after a heat event to address heat-health and other impacts and assess improvements to planning and preparedness activities.
The term urban heat island means the phenomenon observed in urbanized areas in which heat is more extreme than in the surrounding exurban areas and heat is heterogeneously distributed within urbanized areas, due to factors including—
low albedo and impervious surfaces;
low vegetation coverage; and
waste heat produced in urban areas.
Congress makes the following findings:
Extreme heat events have been the leading cause of weather-related death in the United States over the last 30 years, according to the Centers for Disease Control and Prevention and the National Weather Service.
The fourth National Climate Assessment, mandated by the Global Change Research Act of 1990 (15 U.S.C. 2921 et seq.), finds that during the next few decades, annual average temperature over the contiguous United States is projected to increase by a further 2.2°F relative to current temperatures, regardless of future scenarios. The National Climate Assessment projects that the frequency and intensity of extreme heat events will increase in the future as global temperature increases.
Exposure to extreme heat can cause acute heat-related illnesses, such as heat stroke, which already result in more than 65,000 emergency room visits each year and exacerbate respiratory and cardiovascular illnesses.
Heat poses the greatest health risks for adults older than 65 years of age, pregnant people, young children, low-income communities, urban communities, communities with low air conditioning prevalence, socially isolated individuals, people with mental or physical disabilities, people with underlying medical conditions, agricultural or other outdoor workers, workers without sufficient access to cooling, athletes, incarcerated individuals, people experiencing homelessness, and military personnel.
Extreme heat is significantly associated with serious adverse pregnancy outcomes across the United States. Those adverse pregnancy outcomes disproportionately impact Black mothers.
Heat exposure is an issue of environmental justice, as people living in low-income communities, communities of color, and Tribal nations face a number of interacting factors that render them more vulnerable to extreme heat.
The impacts of heat on human health are more severe in urban areas where land surface properties create an urban heat island, particularly in neighborhoods with limited availability of or access to green spaces, shade, and tree cover, due to higher density of building structures and more vehicular traffic.
Limited availability of tree cover and higher temperatures are correlated with low-income neighborhoods in urban areas. In Richmond, Virginia, Baltimore, Maryland, and Washington, DC, researchers found that risk of exposure to extreme heat is disproportionately distributed to communities of color in patterns associated with segregation and redlining.
Researchers have found that few communities in the United States have sufficient climate and health information, guidance, and resources for heat planning, preparedness, and response.
The risks associated with extreme heat have complex interactions and impacts, and the management of those risks requires a transdisciplinary approach.
Regions, communities, and populations that face the greatest health consequences of extreme heat often may experience the lowest heat risk perceptions, have limited incentives, or have access to the fewest resources for responding to extreme heat, and as such, may be less likely to take precautions.
Research on the impacts of extreme heat on human health and the effectiveness of solutions under varying climate, social, and other contexts is stymied by a lack of access to reliable, timely health observations and surveillance due to proprietary data rights, expense, privacy and security concerns, inconsistent reporting of health outcomes and contributory factors, poor data integration and interoperability, few incentives and little systematic coordination to address those problems, and a lack of adequate climate observation, modeling, and assessment in rural, urban, indoor, and occupational settings.
Integrated climate and health research and information, when developed in a collaborative, transdisciplinary manner, can inform long- and medium-range scenario-based planning and decision making to protect communities with environmental justice concerns and other populations from extreme heat, reduce exposure to extreme heat, and address factors that increase vulnerability.
The Federal Government has developed, and should maintain, preserve, or reinstate, various science-informed heat-health tools for communities with environmental justice concerns, workers, employers, and the public to understand heat risk and resources, including the Centers for Disease Control and Prevention Heat and Health Tracker, the Office of Climate Change and Health Equity Climate and Health Outlook, the National Weather Service HeatRisk portal, the National Emergency Medical Services Information System Heat-related Emergency Management Service Activation Surveillance Dashboard, and the Low-Income Home Energy Assistance Program and Extreme Heat website.
Increased heat can have cascading and compounding impacts across and among sectors including energy, food supply and quality, transportation, housing, infrastructure, hospital and healthcare delivery, and education, all of which affect health and well-being.
Heat action plans and early warning systems can reduce heat-related morbidity and mortality by clearly identifying roles and responsibilities as well as evidence-based actions and thresholds to enhance preparedness, and by promoting behavior changes and actions taken by local governments, communities, and individuals through awareness and increased risk perception among those most vulnerable to the health impacts of heat.
There is established within the National Oceanic and Atmospheric Administration an interagency committee, to be known as the National Integrated Heat Health Information System Interagency Committee
(in this section referred to as the Committee
).
The Committee shall coordinate, plan, and direct agencies represented on the Committee to execute, as appropriate, activities across such agencies to ensure a united Federal approach to reducing health risks from heat across timescales (including days, weeks, months, years, and decades).
In order to carry out and achieve the purpose described in subsection (b), the Committee shall include the following:
The Director of the National Integrated Heat Health Information System.
Not fewer than 1 representative from each of the following:
From the Department of Commerce, the following:
From the National Oceanic and Atmospheric Administration, the following:
The National Weather Service.
The Office of Oceanic and Atmospheric Research.
The National Environmental Satellite, Data, and Information Service.
The National Institute of Standards and Technology.
The Bureau of the Census.
From the Department of Health and Human Services, the following:
The Centers for Disease Control and Prevention, including the National Institute for Occupational Safety and Health.
The Office of the Assistant Secretary of Health and Human Services for Preparedness and Response.
The Substance Abuse and Mental Health Services Administration.
The National Institutes of Health.
The Indian Health Service.
The Administration for Children and Families.
The Administration for Community Living.
From the Department of the Interior, the following:
The Bureau of Indian Affairs.
The Bureau of Land Management.
The National Park Service.
The Office of Hawaiian Relations.
From the Environmental Protection Agency, the following:
The Office of Environmental Justice and External Civil Rights.
The Office of Air and Radiation, if the Administrator of the Environmental Protection Agency determines appropriate.
The Office of Research and Development, if the Administrator determines appropriate.
The Office of International and Tribal Affairs.
The Department of Homeland Security, including the Federal Emergency Management Agency.
The Department of Defense.
The Department of Agriculture, including the United States Forest Service.
The Department of Housing and Urban Development.
The Department of Transportation.
The Department of Energy.
The Department of Labor, including the Occupational Safety and Health Administration.
The Department of Veterans Affairs.
The Department of Education.
The Department of State.
The Small Business Administration.
Such other Federal agencies as the Under Secretary of Commerce for Oceans and Atmosphere considers appropriate.
The head of an agency specified in paragraph (1)(B) shall, in appointing representatives of the agency to the Committee, select representatives who have expertise in areas relevant to the responsibilities of the Committee, such as weather and climate prediction, health impacts, environmental justice, urban planning, behavioral science, public health hazard preparedness and response, or mental health services.
The members of the Committee shall select 3 individuals from among such members to serve as co-chairs of the Committee, subject to the approval of the Under Secretary of Commerce for Oceans and Atmosphere.
Of the co-chairs first selected, one co-chair shall be from each of the National Oceanic and Atmospheric Administration, the Department of Health and Human Services, and the Federal Emergency Management Agency.
Subsequent co-chairs shall be selected from among the members of the Committee, except the National Oceanic and Atmospheric Administration shall have the opportunity to maintain a co-chair position.
Each co-chair shall serve for a term of not more than 5 years, except the National Oceanic and Atmospheric Administration shall have the opportunity to maintain a co-chair position.
The co-chairs of the Committee shall work with the Director of the National Integrated Heat Health Information System—
to determine the agenda of the Committee, in consultation with other members of the Committee;
to direct the work of the Committee; and
to convene meetings of the Committee not less frequently than once each fiscal quarter.
The Committee shall promote an integrated, Federal Government-wide approach to reducing health risks and impacts of heat, including by—
developing the strategic plan and implementation plans required by subsection (e);
coordinating across Federal agencies on heat-health communication, engagement, research, service delivery, financial assistance, contracting, and workforce development; and
building capacity and partnerships with Federal and non-Federal entities.
Not later than 2 years after the date of the enactment of this Act, the Committee shall submit to Congress and make available on a public website a 5-year strategic plan that outlines the goals and projects of the Committee, including how the Committee will improve coordination and integration of interagency Federal capacity and capabilities to address health risks of heat, including—
a strategy for improving and coordinating existing Federal data collection and data management to include sharing of data and statistics on heat-related illnesses and mortalities and other impacts, such as agricultural losses, energy and transportation system disruptions, and labor productivity, to inform heat-related activities;
a strategy for improving and coordinating Federal activities to understand user gaps and needs, conduct research, foster innovative solutions, and provide actionable information and services for extreme heat prevention and response; and
mechanisms for financing heat planning, and preparedness, and response within such agencies as the Committee considers appropriate.
The head of an agency represented on the Committee may implement the portions of the strategic plan required by paragraph (1) that are relevant to that agency.
Not later than 5 years after the submission of the strategic plan required by paragraph (1), and every 5 years thereafter, the Committee shall brief Congress on an update of the plan, which shall include progress made toward goals outlined in the plan and new priorities that emerge.
The Under Secretary of Commerce for Oceans and Atmosphere shall provide technical and administrative support to the Committee, using amounts authorized to be appropriated to the National Oceanic and Atmospheric Administration.
In carrying out the responsibilities of the Committee, the Committee shall consult with relevant—
regional, State, and local governments, and Indian Tribes;
international organizations and partners;
research institutions;
nongovernmental organizations and associations;
medical experts with expertise in emergency response; and
environmental health, economic or business development, or community engagement organizations.
The Under Secretary of Commerce for Oceans and Atmosphere shall establish within the National Oceanic and Atmospheric Administration a system, to be known as the National Integrated Heat Health Information System
(NIHHIS) (in this section referred to as the System
).
The purpose of the System is to reduce heat-related impacts by—
improving the delivery of data, information, forecasts, warnings, predictions, and projections related to temperature, extreme heat, and related impacts, especially for disproportionately affected communities;
through the Office of Oceanic and Atmospheric Research, developing, maintaining, and preserving science-based solutions and tools to build capacity and improve impact-based decision support services for heat resilience, particularly human life; and
entering into grant agreements with centers of excellence that provide technical and other assistance to support heat resilience.
In carrying out the purpose described in subsection (b), the Director of the System shall—
develop and sustain robust relationships with Federal and non-Federal partners and decisionmakers, representing different geographic (including urban and rural) regions and including—
members of the emergency management field and emergency response providers, including fire service, law enforcement, hazardous materials response, emergency medical services, and emergency management personnel, or organizations representing such individuals;
health scientists, emergency and inpatient medical providers, public health professionals, and healthcare providers at Federally Qualified Health Centers;
experts from Federal, State, and local governments and Indian Tribes, and the private sector, representing standards-setting and accrediting organizations, including representatives from the voluntary consensus codes and standards development community, particularly those with expertise in the emergency preparedness and response field;
state and local government and Indian Tribes officials with expertise in preparedness, protection, response, recovery, and mitigation, including Adjutants General;
elected State and local government and Indian Tribe executives;
representatives of individuals from communities who have a high proportion of extreme heat survivors and communities with environmental justice concerns;
representatives of individuals with disabilities and other populations with special needs;
representatives of individuals from the private, nonprofit, and public energy sector that help to protect consumers from energy shutoffs and assist with energy rebate funding; and
such other individuals as the Under Secretary of Commerce considers appropriate—
to identify and respond to the demand for actionable weather- and climate-related information that reduces health risks on multiple timescales;
to conduct research and scientific innovation; and
to develop and deliver timely and accessible decision support services, solutions, tools, and information to inform planning, preparedness, and risk-reducing actions across timescales;
coordinate and collaborate with the international community and global partners to conduct research and learn from, leverage, and contribute to global knowledge as it pertains to predicting and preventing the impacts of increased heat;
enhance observations, surveillance, monitoring, and analysis necessary for the activities described in paragraphs (1) and (2); and
communicate, educate, and build awareness regarding the risks and impacts of increased heat and extreme heat events to communities, educational and economic sectors, Indian Tribes, and other relevant stakeholders.
Federal Records Act of 1950), and the Foundations for Evidence-Based Policymaking Act of 2018 (Public Law 115–435; 132 Stat. 5529) and the amendments made by that Act, to maximize use of such data to support the goals of the System.
In coordination with the activities described in paragraph (1), the Director of the System and interagency partners shall—
The Under Secretary of Commerce for Oceans and Atmosphere shall designate at least one warning coordination meteorologist with expertise in heat warnings, as described in section 405 of the Weather Research and Forecasting Innovation Act of 2017 (15 U.S.C. 8545), at the National Centers for Environmental Information.
The Director of the System shall develop and implement a climate and health research grant program, in coordination with the financial assistance program under section 7 and other Federal programs—
to improve understanding of—
the climate epidemiology and social, behavioral, and economic drivers of heat-health vulnerability and risk;
the drivers of climate variability, predictability, and changes in extreme heat; and
the impacts of extreme heat, compound hazards, and cascading impacts across timescales;
to investigate and evaluate the effectiveness of risk management actions, interventions, policies, standards, codes, and guidelines; and
to address other topics as appropriate, including topics outlined in the strategic plan required by section 4(e)(1) and the financial assistance program under section 7.
The Director of the System shall carry out such other activities as the National Integrated Heat Health Information System Interagency Committee established under section 5 considers appropriate.
Not later than 120 days after the date of the enactment of this Act, the Under Secretary of Commerce for Oceans and Atmosphere, in consultation with the National Integrated Heat Health Information System Interagency Committee established under section 4 (in this section referred to as the Committee
) and the individuals and entities described in section 4(g), shall seek to enter into an agreement with the National Academies of Sciences, Engineering, and Medicine to conduct a study on extreme heat information and response, to be completed not later than 3 years after such date of enactment.
The study described in paragraph (1) shall—
identify policy and research gaps, which may include—
regions of the United States with the largest gaps between awareness, preparedness, and capacity to address extreme heat; and
heat-related gaps in data, such as—
the number of schools, prisons, and other public facilities that lack air conditioning;
the demographic breakdown of people affected by heat events, including by race, age, gender, occupation, and income;
capacity building, research, and heat resilience resource shortages in rural and urban communities;
medical coding in health care facilities (such as hospitals, emergency rooms, and health centers) that indicate heat-related illnesses (such as kidney failure, dehydration, and fainting spells);
with respect to public policy at the State and community level that enhances vulnerabilities to extreme heat (such as outdoor working conditions and thresholds to protect workers, animals, and others susceptible to heat-related illness); and
the extent to which Federal heat-health tools that have been discontinued, dismantled, or otherwise limited in public accessibility and availability, including the Centers for Disease Control and Prevention Heat and Health Tracker, the Office of Climate Change and Health Equity Climate and Health Outlook, the National Weather Service HeatRisk portal, the National Emergency Medical Services Information System Heat-related Emergency Management Service Activation Surveillance Dashboard, and the Low-Income Home Energy Assistance Program and Extreme Heat website, have contributed to changes in extreme heat risk, education, and data collection;
provide recommendations for addressing gaps with respect to policy, research, operations, communications, and data, including the gaps identified under subparagraph (A), affecting heat-health planning, preparedness, response, resilience, adaptation, and environmental justice and equity;
provide such other recommendations as the Director of the National Integrated Heat Health Information System established under section 5 considers appropriate, which may include strategies for—
communicating warnings to and providing impact-based decision support to promote preparedness actions and resilience of populations with limited opportunities to avoid extreme heat, including to individuals who may have barriers to such information;
understanding compound and cascading risks, and implementing alternative heat-health risk reduction interventions to manage those risks collectively, such as reducing risk of the transmission of infectious diseases during heat waves by creating outdoor cooling locations or increasing ventilation and filtration in indoor cooling centers;
promoting community resilience to heat events and incorporating principles of environmental justice in community response to heat waves;
addressing the impacts of extreme heat on energy cost, affordability, and reliability for residential and commercial infrastructure (such as weatherization, energy costs, electric power systems, and water supply and treatment systems); and
developing protections for workers for the effects of indoor and outdoor heat; and
consider such other subjects as the Committee considers appropriate, which may include—
the feasibility of enhancing and standardizing existing nationwide data collection on heat-related illnesses and mortalities to improve and ensure consistent collection of national-level heat illness data across all 50 States, territories, and local jurisdictions of the United States;
mechanisms for financing heat preparedness; and
the effectiveness of county-or local-level heat awareness and communication approaches, heat action, and tools, preparedness plans, or mitigation.
Following the study described in paragraph (1), the Committee shall work with heat experts across disciplines to comprehensively identify impacts of increased heat to inform consistent and agreed upon definitions for heat events, heat waves, and other relevant terms.
Not later than 90 days after completing the study described in subsection (a)(1), the Committee shall—
make available to the public on a Federal internet website of the National Oceanic and Atmospheric Administration a report on the findings and conclusions of the study; and
submit the report to—
the Committee on Commerce, Science, and Transportation of the Senate;
the Committee on Health, Education, Labor, and Pensions of the Senate;
the Committee on Science, Space, and Technology of the House of Representatives;
the Committee on Energy and Commerce of the House of Representatives; and
the Committee on Education and Workforce of the House of Representatives.
Not later than 1 year after the date of the enactment of this Act, the Director of the National Integrated Heat Health Information System established under section 5 (in this section referred to as the Director
) may, in coordination with the National Integrated Heat Health Information System Interagency Committee established under section 4 (in this section referred to as the Committee
), establish and administer a community heat resilience program to provide financial assistance to eligible entities to carry out projects described in subsection (e) to ameliorate human health impacts of extreme heat events.
Upon completion of the strategic plan required by section 4(e)(1), the Committee may revise the community heat resilience program to ensure the program aligns with the strategic plan and is administered in accordance with the plan.
The purpose of the financial assistance provided under this section is to improve community resilience to heat and heat-health impacts and further scientific research to address adaptation gaps and priorities.
Financial assistance provided under this section may be in the form of prizes, contracts, grants, or cooperative agreements.
Entities eligible to receive financial assistance under this section to carry out projects described in subsection (e) include—
nonprofit entities;
States;
Indian Tribes;
local governments;
local workforce development boards;
academic institutions; and
centers of excellence designated by the National Integrated Heat Health Information System.
Projects described in this subsection include the following:
Projects to reduce heat-health risks, including sustainable heat reduction and mitigation solutions such as for cool roofs, cool pavements, urban forestry or tree plantings and maintenance, the provision of shade, cooling and resilience centers, retrofitting buildings for cooling, improving the resilience of the power grid to ensure reliable air conditioning, energy efficiency, acquisitions or upgrades of filtration systems or high-efficiency air conditioning systems, and strategies to improve community level response before and during a heat event.
Training programs to support the development and integration of education and training programs for identifying and addressing risks associated with climate change for vulnerable individuals.
Projects designed to improve heat risk mitigation capacity, research, and resource access and deployment in rural and urban communities.
Projects focusing on being responsive to heat-related needs from communities heard from engagements at different geographic scales (national to regional to local) including—
to expand public awareness of heat risks;
to conduct community-based climate and health observational campaigns;
to conduct scientific research to assess and address gaps and priorities regarding the risks of extreme heat in communities;
to communicate risks and warnings to isolated communities;
to support the establishment of workplace policies and practices to reduce the risk of extreme heat illness among workers;
to educate such communities about how to respond to extreme heat events; and
to establish local, city, and county heat planning and heat-related emergency action plans.
In selecting eligible entities to receive financial assistance under this section, the Director shall prioritize entities that will carry out projects that provide benefits for historically disadvantaged communities and communities with significant heat disparities associated with race, ethnicity, or income.
Not less than 40 percent of the amount of financial assistance provided under this section in any fiscal year shall be provided to eligible entities to implement projects described in subsection (e) in communities with environmental justice concerns or low-income communities.
The Director shall seek to equitably distribute financial assistance provided under this section based on geographic location or such other factors as the Director determines appropriate.
There is authorized to be appropriated to the National Oceanic and Atmospheric Administration to carry out sections 4 and 5, including for any administrative costs for the National Integrated Heat Health Information System Interagency Committee and the National Integrated Heat Health Information System, the following:
For fiscal year 2026, $20,000,000.
For fiscal year 2027, $20,000,000.
For fiscal year 2028, $20,000,000.
For fiscal year 2029, $20,000,000.
For fiscal year 2030, $20,000,000.
There is authorized to be appropriated to the National Oceanic and Atmospheric Administration to contract with the National Academies of Sciences, Engineering, and Medicine to carry out section 6 $500,000 for each of fiscal years 2026 through 2028.
There is authorized to be appropriated to the National Oceanic and Atmospheric Administration to carry out section 7 the following:
For fiscal year 2026, $10,000,000.
For fiscal year 2027, $10,000,000.
For fiscal year 2028, $20,000,000.
For fiscal year 2029, $30,000,000.
For fiscal year 2030, $30,000,000.