News & Events

A thermometer is inside of a sun with a caution sign

2026 Heat Safety Week – Social Media Campaign

February 13, 2026

The National Integrated Heat Health Information System (NIHHIS) is hosting a social media week to raise awareness about the dangers of heat and provide safety tips. Join the conversation by posting your own content with the hashtag #HeatSafety and following along with NIHHIS messages.

Webinar – “Assessing Extreme Heat: Physical Mechanisms and Advances in Earth System Modeling”

February 10, 2026
Event

Heat Tabletop Exercises: Lessons Learned and Best Practices

January 28, 2026
News

New Learning Module: Investigating Heat Islands 

December 19, 2025
News
All News & Events
Extreme Heat Advisories

Heat at a Glance

See the current number of people in the U.S. that are currently under active National Weather Service extreme heat advisories, watches, and warnings.

Staying Safe in the Heat

Find information and resources including cooling centers, what to wear, how to stay hydrated, etc.
Featured Pages
A screenshot of the National Weather Service's HeatRisk tool in 2024 showing high temperatures across the central United States.

Data and Tools
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Communicating About Heat
A diverse group of people, including construction workers, firefighters, children, an older adult, and a male with a handheld fan, gather outdoors under harsh sunlight, showing visible signs of heat stress and exhaustion.

Who is Most at Risk to Extreme Heat?
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Resources & Guides