Another day, another awful heat wave. This one is primed to affect nearly a quarter of the U.S. citizens. According to ABC ...

The warning is set from noon Sunday until 8 p.m. Monday. Dangerously hot conditions are expected with heat index values up to ...

Toronto is headed into a "two-day heat event" with scorching temperatures exceeding 30 C, Environment Canada says.The federal ...

A dangerous heat wave is impacting over 80 million Americans across the Southeast and Midwest, with feels-like temperatures ...

Dangerously hot conditions, with heat index values locally higher than 110 degrees, are expected. A Weather Impact Alert ...

Heat advisories and extreme heat warnings have been issued from Florida to Minnesota, with heat indexes reaching up to 115°F and little relief expected through midweek.

The risks of heat are only growing thanks to lasting heat waves, extreme nighttime temperatures and unusual humidity, like ...