Extreme heat kills more Americans each year than hurricanes, floods, and tornadoes combined. In 2024 alone, heat-related deaths reached 2,394 — nearly double the toll recorded in 1999. Yet as a heat dome over the eastern two-thirds of the United States placed more than 200 million Americans under heat alerts this July 4 weekend, federal emergency law still does not have a mechanism to declare extreme heat a major disaster.
No President has ever issued a major disaster declaration solely for extreme heat under the Robert T. Stafford Disaster Relief and Emergency Assistance Act. The law that governs when FEMA can deploy its full resources was designed around sudden, property-damaging events — hurricanes, tornadoes, floods, earthquakes. Extreme heat kills people, not buildings. And because the Stafford Act defines "damage" in terms of structural harm, the deaths do not count in the same way.
Why This Matters
For residents of Phoenix, Houston, Dallas, Atlanta, and the dozens of other metro areas currently experiencing dangerous temperatures, the policy gap has real consequences. When a hurricane makes landfall, FEMA can deploy individual assistance for displaced residents, cover medical costs, and send direct financial support to affected households. None of that is automatically available for a heat wave — even one that kills dozens in a single city over a single weekend.
State and local governments bear the full cost of emergency cooling centers, public health outreach, transportation to shelters, and medical response. When those resources are strained, the burden falls on the communities that are already least equipped to handle it: low-income households without air conditioning, elderly residents living alone, outdoor workers without employer-provided shade or hydration breaks, and unhoused individuals with no shelter from the sun.
The current heat wave is not an anomaly. It is the kind of event that climate scientists have been projecting for years, and the policy framework has not kept pace.
What We Know So Far
The Stafford Act defines "major disaster" as any natural catastrophe — including hurricanes, tornadoes, storms, earthquakes, volcanic eruptions, landslides, snowstorms, and droughts — that causes damage sufficient in severity and magnitude to warrant federal assistance. Extreme heat is not explicitly listed in the statute.
According to a Congressional Research Service report, every past presidential request for a Stafford Act declaration specifically citing extreme heat has been denied. In 1980, the governor of Missouri requested declarations for extreme heat and drought. In 1995, the governor of Illinois requested a major disaster declaration for a Chicago heat wave that directly caused more than 700 deaths. In 2022, California's governor requested a declaration for a heat dome and the wildfires it triggered — that request was also denied.
A 2025 GAO report (GAO-25-107474) confirmed that fewer than 1% of FEMA's Building Resilient Infrastructure and Communities (BRIC) awards from 2020 to 2023 primarily addressed extreme heat, totaling approximately $963,000 — a fraction of what heat events cost in public health responses and lives.
Where the Risk Is Highest
The current July 2026 heat dome is affecting the eastern two-thirds of the country, but heat health risks are not evenly distributed even within affected metro areas.
Urban heat islands — dense neighborhoods of concrete, asphalt, and older housing stock with little tree canopy — can be 10 to 15 degrees hotter than surrounding suburban areas, according to the National Weather Service. In cities like Houston, Phoenix, Atlanta, and Washington, D.C., neighborhoods with lower average incomes tend to have higher concentrations of heat-vulnerable populations and fewer cooling resources.
People who lack air conditioning at home — disproportionately low-income renters in older housing — face the greatest exposure risk during prolonged heat events. According to research cited by the Center for American Progress, heat deaths have been accelerating at 16.8% per year between 2016 and 2023, driven largely by urban heat island effects and longer, more intense heat events.
Outdoor workers — including agricultural laborers, construction workers, and delivery drivers — also face elevated occupational risk. OSHA extended its National Emphasis Program for heat hazards on April 10, 2026, for an additional five years across 55 high-risk industries. However, no permanent federal heat standard for indoor or outdoor workplaces has been finalized.
What Policy Experts Say
The core argument from health policy analysts is straightforward: the Stafford Act's definition of "disaster" was written for a world where disasters destroy infrastructure. Extreme heat destroys people — and federal law has not been updated to reflect that distinction.
"Each year, extreme heat kills more Americans than every other form of extreme weather combined. But still the federal government sits on the sideline, leaving state and local governments to drain their funds trying to keep people safe," Senator Ruben Gallego said in a statement accompanying the Extreme Heat Emergency Act, a bipartisan bill introduced in October 2025 that would explicitly add extreme heat to the Stafford Act's definition of major disaster.
Katharine Hayhoe, chief scientist at the Nature Conservancy, told NPR that extreme heat is a feature of a changing climate, not a temporary anomaly: the heat waves Americans are experiencing now are getting longer, stronger, and more dangerous with each passing decade.
What the Evidence Shows — and What It Does Not
The claim that extreme heat kills more Americans than other weather hazards is supported by CDC mortality data and peer-reviewed research. A 2024 JAMA study found heat deaths were accelerating at 16.8% per year from 2016 to 2023 — meaning the toll is not static.
However, heat deaths are significantly undercounted. Many heat-related deaths are attributed to the underlying condition that the heat exacerbated — heart failure, kidney disease, or respiratory distress — rather than heat itself. This means the 2,394 figure likely represents a conservative floor.
The argument about federal disaster law is documented and bipartisan in origin. It is not a partisan claim. A GAO report published in 2025 recommended that FEMA evaluate its role and close programmatic gaps for heat assistance. FEMA concurred with three of the four recommendations, but did not concur with the recommendation to expand benefit-cost analysis tools for heat projects.
An important legal nuance: FEMA's own administrator testified before Congress in September 2023 that a Stafford Act declaration for extreme heat is theoretically possible under current law — but in practice, states have not submitted requests that meet FEMA's evidentiary thresholds for "severity and magnitude." The legal gap is not absolute, but the practical precedent is.
Who Faces the Greatest Risk?
Health officials consistently identify the same groups as most vulnerable to heat-related illness and death:
- Adults 65 and older, particularly those living alone without air conditioning
- Infants and children, who cannot regulate body temperature as effectively
- People with cardiovascular disease, kidney disease, diabetes, or respiratory conditions
- People taking medications that affect sweating, heart rate, or fluid retention (including diuretics, antihistamines, and certain psychiatric medications)
- Unhoused individuals without access to shade, water, or cooling centers
- Outdoor workers in agriculture, construction, landscaping, and delivery
- Low-income residents in urban neighborhoods with poor tree cover and older housing stock
Symptoms and Warning Signs to Watch For
Heat-related illness progresses through recognizable stages. Early warning signs include:
- Heavy sweating
- Cool, pale, and clammy skin
- Rapid, weak pulse
- Nausea or vomiting
- Muscle cramps
- Fatigue and weakness
- Dizziness or fainting
Heat exhaustion requires moving to a cool area, hydrating, and resting. It can be managed outside a hospital setting if caught early.
Heat stroke is a medical emergency. Signs include a body temperature above 103°F, hot and dry or damp skin, rapid and strong pulse, confusion, slurred speech, or loss of consciousness. Call 911 immediately. Heat stroke can be fatal if not treated promptly.
What You Can Do Now
- Check on elderly neighbors, family members, and anyone living alone during sustained heat events, especially at night, when indoor temperatures remain dangerously high.
- Find your nearest cooling center. Most major cities and counties operate free public cooling centers during heat emergencies. Contact your local city or county government, or search "[your city] cooling center 2026."
- Avoid outdoor activity during peak heat hours , generally 10 a.m. to 4 p.m., when temperatures and UV exposure are highest.
- If you work outdoors , know the OSHA heat safety guidance and your legal right to water, rest breaks, and shade. The OSHA National Emphasis Program on heat hazards provides enforcement coverage in 55 industries.
- Review your medications with a pharmacist or physician if you take diuretics, antihistamines, or other medications that may impair your body's ability to cool itself.
- Stay hydrated with water or electrolyte-containing fluids. Avoid alcohol and caffeinated beverages during heat events, as they can accelerate dehydration.
Cost and Access: What Patients Should Know
Heat-related emergency care is covered by most insurance plans and by Medicare and Medicaid. For uninsured residents, many hospital systems have financial assistance programs for emergency visits. Free cooling centers are available in nearly every major U.S. city during declared heat emergencies — contact your local city or county health department for locations and hours.
The Low Income Home Energy Assistance Program (LIHEAP), administered by the Department of Health and Human Services, provides funding to help low-income households manage cooling costs. Eligibility and enrollment are handled through state agencies; contact your state's LIHEAP office for assistance.
What Happens Next
The Extreme Heat Emergency Act, introduced in October 2025 with bipartisan Senate and House sponsors, would amend the Stafford Act to explicitly include extreme heat. As of July 2026, the bill has not advanced to a floor vote in either chamber.
FEMA's implementation of the four GAO recommendations remains incomplete. A finalization date for the OSHA permanent heat standard — proposed in August 2024 with public hearings concluded in 2025 — has not been announced.
MedicalDaily will track both the legislative status of the Extreme Heat Emergency Act and any updates to FEMA heat guidance as summer 2026 continues.
The Bottom Line
Extreme heat is the deadliest weather hazard in the United States, and a 200-million-person heat event is unfolding right now. The federal policy gap is real and well-documented. Until it is closed, response responsibility falls on state and local governments — and on individual residents who must take protective action on their own. If you or someone near you is showing signs of heat stroke, call 911 immediately. If you live in a high-risk area without air conditioning, identify your nearest cooling center today.
