Map of the eastern United States showing heat risk levels using color-coded zones. Areas with the highest heat risk are marked in dark red and purple, primarily covering parts of the Midwest, Ohio Valley, and Mid-Atlantic regions. Surrounding areas in orange and yellow indicate moderate to lower heat risk. Major cities such as Chicago, St. Louis, Atlanta, and Washington, D.C. are included in the affected regions.

Data and Tools

Explore our collection of heat tools and products from across our partner agencies. Tools in this section can help you and your community prepare for heat events and learn more about your risk to extreme heat.

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1–12 of 198 results found.

Graphic Illustration of Heart Pulse Rate

5 Steps to Prepare for Hot Days For People with Heart Disease

A person sitting down with his head in his hand and a thermometer in his mouth

5 Ways To Help The Homeless During A Heat Emergency (thrivedc.org)

A Maturity Model for Heat Governance

A Public Service Announcement (PSA) on Heat Illness Prevention

A Public Service Announcement (PSA) on Heat Illness Prevention (Spanish)

Additional Safety Tips

Two bottles, a red cross booklet, and a battery

Administration for Community Living Emergency Preparedness

Construction workers drinking water during a break from work. Credit: S&B Engineers and Constructions photo submission to the OSHA Beat the Heat national photo contest.

AIHA Heat Stress Application

A person is outside sweating from the heat

Arizona Department of Health Services brochure

Arizona’s Extreme Heat Preparedness Plan

A map of wildfire risk in relation to federally recognized Tribal land

Backgrounder: Understanding the Intersection of Tribal Nations and Climate Change (Climate.gov)

A blue and white sun with smoke coming out of it

Be Prepared for Extreme Heat

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Urban Heat Islands

Data and Tools

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NIHHIS is made possible by our participating agencies.

Learn About Heat

About Urban Heat Islands

Planning & Preparing

Urban Heat Islands