Maps show where extreme humidity and 90- or 100-degree temperatures will affect about 255 million people across the United ...

More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to ...

Heat dome will cause dangerously high temperatures in many places across the country this weekend, especially the Midwest and East Coast.

Remote-sensing data and artificial intelligence are mapping the most heat-vulnerable buildings in cities like Delhi, in an effort to target relief from extreme temperatures at a granular level.

More than 40 million people in the U.S. were under heat alerts Friday, according to the National Weather Service.

The Chinese capital issued a yellow alert for high temperatures on Friday. As of 3:40 pm on Saturday, temperatures at an ...

The first official week of summer will usher in a punishing heat wave, forecasters say, the beginning of what is likely to be a hotter-than-normal season across Canada. After gradually climbing ...

Toronto, get ready for your first major heat wave of the year. The stretch of scorching temperatures and humidity was underway Wednesday as Toronto was expected to reach a high of 28 C ...