extreme heat, climate change, global warming, heat index, temperature, humidity, heat event, city, heat condition
Why is this useful?
This data accompanies the Killer Heat in the United States: Climate Choices and the Future of Dangerously Hot Days report to provide findings for the future frequency of extreme heat days over time for different greenhouse gas emissions scenarios. Data are provided at the county level for the contiguous United States. Results include modeled historical data and projections of the number of days per year above heat index thresholds of 90°F, 100°F, and 105°F as well as the number of off-the-charts days (when the temperature and humidity exceed the limits of the National Weather Service's heat index calculations) per year.