A new report shows a sharp increase in peak electricity demand, leading to blackout concerns in multiple states. Here's how ...

ERCOT’s isolated grid makes Texas the blackout leader during heat waves, outpacing even Florida and California.

More than 125 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

Heat doesn’t just mean canceled events. It also poses a health risk. If you can’t afford to cool the whole house, make a “cool space” to sleep in.

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

Now think of a famous heat wave. It’s more difficult to do. And yet, heat waves can be fatal too. In 2023, scorching weather ...

The first major U.S. heat wave of the year starts on Friday. It brings dangerously high temperatures and is expected to last ...

Studies published since 2023 have shown an increased risk of early or premature births following periods of high temperatures ...

Newsday meteorologist explains how a heat dome affects Long Island weather, causing temperatures to soar and creating ...

Record-breaking heat indices — a combination of temperatures and humidity to determine how heat really feels to the body — are possible from Kansas City to Maine.