Extreme summer heat is increasing in the United States. Climate projections indicate that extreme heat events will be more frequent and intense in coming decades. However, some heat-related illness and death risks have diminished in recent decades, possibly due to better forecasting, heat-health early warning systems, and increased access to air conditioning for the U.S. population. Despite this, extreme heat events remain a cause of preventable death nationwide.
The Heat-Related Illness and Temperature map shows the rate of emergency department (ED) visits associated with heat-related illness (HRI) per 100,000 ED visits by region (as defined by the U.S. Department of Health and Human Services) for the selected day using data available through the National Syndromic Surveillance Program.
Use this link to launch the Heat & Health Tracker Data Map.