San Antonio braces for high heat with temperatures nearing 100 degrees and heat indices possibly exceeding that.

As forecast by the National Weather Service, Tuesday will feature mostly sunny skies with temperatures only reaching into the upper 70s and low 80s. However, those relatively tame temperatures will ...

Chicago's in for a scorcher. An Extreme Heat Watch is in effect Wednesday through Thursday. Here's how to stay safe.

San Diegans can expect cool temperatures and below-average highs due to a deep marine layer, per NWS San Diego.

Moving south, Port St. Lucie, Naples and Cape Coral could see highs of 91, while Palm Beach was forecast for 87 degrees. Miami and Fort Lauderdale were forecast, respectively, for highs of 88 and 91 ...

In order to stay safe, people are urged to limit outdoor activities, stay hydrated, avoid alcohol, and wear light clothing.

It's time for the second heat dome of the summer season. Here's where it will be felt most, and how hot it will get.

Michigan is heating up this week. Two southwest counties are already under a heat advisory because of dangerous heat index ...

The National Weather Service sent out millions of extreme heat warnings, heat watches and heat advisory alerts early Monday ...

You may want to make sure your air conditioning is working. Columbus, and a sizable chunk of the nation, is in for a scorcher ...

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making ...

“Thursday remains on track to be the hottest day of the week; a heat advisory will likely be needed as the heat index reaches ...