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Heat Risk

Extreme Heat Risk Outlook

Extreme Heat Risk Outlook

Heat graphic

View additional hazard outlooks and experimental graphics on the Graphical Hazardous Weather Outlook (GHWO) .

Forecast: Heat Index, Temperature, Humidity and Wind
 
Heat Products Changes

The National Weather Service (NWS) is renaming its heat watch and warning products to improve messaging of these hazards and provide better decision-making services. Nationwide Implementation in March 2025

Hazard simplification for heat messaging

NWS is renaming its Heat Watch and Heat Warning products to improve messaging. On March 4, 2025, the NWS implemented the following changes:

Excessive Heat Watches will be renamed to Extreme Heat Watches.

Excessive Heat Warnings will be renamed to Extreme Heat Warnings.

This effort is part of the Hazard Simplification Project, which integrates years of public and partner engagements and social science research to improve and evolve our alerting system. Renaming these Watch and Warning products also enables clear and timely decision support.

Heat products changes

Heat Safety: Stay cool, stay hydrated, and stay informed!
 

Heat safety

Heat is the #1 weather-related killer in the United States! Here are a few tips on staying safe during episodes of dangerously hot weather:

  • Children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.
  • Take extra precautions if you work or spend time outside. When outdoors, wear sunblock and light colored clothing as well as a wide-brimmed hat to keep your head and body cooler. Limit strenuous outdoor activities and take frequent rest breaks in shaded or air conditioned environments. When possible, reschedule strenuous activities to early morning or evening.
  • Drink more water than usual and avoid alcohol, sugar, and caffeine.
  • Recognize the signs and symptoms of heat illness. Early symptoms include headache, thirst, and muscle cramps. Serious symptoms include weakness, skin that is cool to the touch, fast but weak pulse, nausea, and fainting. Severe symptoms include hot and red dry skin, fast and strong pulse, sweating that has stopped, and unconsciousness. Untreated heat illness can lead to a fatal heat stroke.

For more information, check the National Weather Service's Heat Safety page.