The National Oceanic and Atmospheric Administration says people should start exercising “caution” when the heat index reaches ...

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

Nearly 160 million people are under heat alerts from eastern Texas to Maine, as temperatures are forecast to be as much as 20 ...

A family of 11, including six children, was rescued off the Holbert Trail on South Mountain in Phoenix during a hot summer ...

As triple-digit temperatures hit the East Coast, individuals with a mental illness taking psychiatric medications could be at ...

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air ...

MIAMI - Global players' union FIFPRO is exploring whether extending halftime to 20 minutes and introducing more frequent cooling breaks could better protect players from extreme heat. Read more at ...

Portugal is expected to see highs of up to 109 degrees Fahrenheit. Parts of Spain, France, Italy and Greece are also bracing ...

Fire crews were called to conduct multiple mountain rescues amid extreme heat in the Phoenix area on Sunday, including one ...

PHOENIX (AZFamily) — A very hot start to the week is expected across Arizona, with First Alert Weather Days declared for extreme heat both today and tomorrow. Download the First Alert Weather App Here ...

PHOENIX — Record-breaking heat is making a comeback in the Valley today. An Extreme Heat Warning remains in effect through Tuesday, with temperatures expected to climb between 113 and 117 degrees ...

RICHMOND, Va. — The dangerous heat that's been blanketing our region is sending more people to emergency rooms. Doctors say pregnant women face special risks during these extreme temperatures.