An intense heat wave threatens millions of people across the Southeast with temperatures reaching 115 degrees through midweek.

Here’s what a heat dome is, how it’s different from a heat wave and how hot it has to get for each region of Florida to issue a heat advisory.

The worst of Southern California’s ongoing heat wave is expected to land Thursday, but relief is not yet in sight. Temperatures will remain toasty over the weekend, and another hot spell is ...

A dangerous heat wave continues across a large part of the United States, with more than 130 million people under extreme heat watches and warnings from South Dakota to Florida.

The multi-year heat wave nicknamed ‘The Blob’ impacted thousands of kilometres of marine ecosystems from Alaska to Baja California.

Here’s what a heat dome is, how it’s different from a heat wave and how hot it has to get for each region of Florida to issue a heat advisory.

SAVANNAH, Ga. (AP) — Residents in the Southeast U.S. are no strangers to heat in the summertime. But this week's sweltering hot weather set at least one record and has forecasters urging ...