Intense heat builds this week in the Upstate and Western North Carolina. Chief Meteorologist Chris Justus maps out the return ...

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).

E! News Heat index measures how hot it actually feels when factoring for humidity. Prolonged exposure to heat index above 80 degrees can lead to fatigue, as previously reported by USA TODAY.

Heat maps generated by eye tracking have gained a major popularity over the years. This is partly since they are easy to create and can effectively produce a data summary that is easy to understand.

The NWS has classified the entirety of Illinois in either Category 3 or 4 heat risk, with regions near Chicago and St. Louis experiencing the most extreme heat as of Monday.

To address the immediate heat safety needs of the community, Houston is operating as many as 22 cooling centers with Reliant Energy’s Beat the Heat Program through September this year.

WASHINGTON — Summer officially starts Friday, but D.C. got a jump start Wednesday and Thursday, with high temperatures. Mayor Muriel Bowser has activated a Heat Alert, warning residents of ...

By Patrick Wingrove and Brendan O’Brien (Reuters) -Major cities across the United States are preparing for extreme temperatures caused by a heat dome that hit the U.S. Plains on Friday and is ...

High overnight lows can be a particularly dangerous part of a heat wave, said Ashley Ward, director of the Heat Policy Innovation Hub at Duke University. “Your body needs a reprieve,” she said.

The first heat wave of summer, starting Friday in central states, will bring days of extreme conditions to many cities across the United States, with humidity levels reaching far beyond what is ...

An excessive heat advisory is in effect for several New Jersey counties as hot temperatures and high humidity will make feels-like temperatures reach near 100 degrees, a prelude to an impending heat ...