Global & Public Health

The Heat and Health Index (HHI) helps identify communities where people are most likely to feel the effects of heat on their health, in order to build towards a healthier and more heat-resilient future for all. Enter a ZIP code in the text box on the right or select a ZIP Code Tabulation Area (ZCTA)* in the map below to learn more about how different factors influence the way heat affects your community.

The NWS HeatRisk is an experimental color-numeric-based index that provides a forecast risk of heat-related impacts to occur over a 24-hour period. HeatRisk takes into consideration:
How unusual the heat is for the time of the year
The duration of the heat including both daytime and nighttime temperatures
If those temperatures pose an elevated risk of heat-related impacts based on data from the CDC
This index is supplementary to official NWS heat products and is meant to provide risk guidance for those decision makers and heat-sensitive populations who need to take actions at levels that may be below current NWS heat product levels.

Hot days can affect anyone. If you are pregnant, are a child or teen with asthma, or have a heart condition or other chronic health conditions, heat can make your health worse.

Enter your zip code below to get the HeatRisk for this week and actions you can take to keep you and your family safe.

The Heat-Related EMS Activation Surveillance Dashboard, created in partnership between the HHS Office of Climate Change and Health Equity and the DOT National Highway Traffic Safety Administration, uses nationally submitted Emergency Medical Services (EMS) data to track EMS responses to people experiencing heat-related emergencies in the pre-hospital setting.