Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

These aren't just records for just a calendar day. More than a dozen locations have rewritten their heat record books. Here's a list.

Seven graduations that were also supposed to be held at Hinchliffe Stadium were rescheduled due to the sweltering heat.

The heat is downright miserable this weekend, but it means the Colorado Rockies' batting stats might look a little better than usual! When the temperatures get this hot, at Denver’s higher ...

The map embeds below identify areas where the heat index is forecasted to reach NWS-defined levels from "Caution" (80 degrees Fahrenheit) to "Extreme Danger" (above 125 degrees). More in U.S.

Extreme heat hits the US: See map of impacted states. Julia Gomez, USA TODAY. ... Heat index map: Tuesday, June 24: ... High elevation. Strenuous activity. Age: ...