![Bruna Alves](https://cdn.statcdn.com/static/../CMS/contactperson/ERI1703_1591697937.png)
Exposure to heat waves in U.S. 2016-2021
In the United States, approximately 64 percent of the people lived in counties that experienced multiday heat waves in 2021. A heatwave is designated as two or more consecutive days when the daily minimum temperature in a particular area is higher than the 85th percentile of historical July and August temperatures.