"These levels of heat mean health impacts become more likely in general," the National Weather Service warned.

The Chicago area is set to see its hottest weather of the season this week, but which parts of the region will be most impacted by the scorching temperatures?

Add Yahoo as a preferred source to see more of our stories on Google. States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the ...

Millions of Americans could soon face dangerous and potentially life-threatening conditions as a heat wave descends on the U.S.

New York City is under an extreme heat advisory that will see temeperatures soar beginning Wednesday

Texas is expected to heat up sharply as the World Cup begins, with widespread 90-degree temperatures and pockets of triple-digit heat statewide.

A new San Diego mapping tool helps residents and city planners identify heat dangers block by block, guiding neighborhood-specific climate solutions.