The National Weather Service called the warm and above-average temperatures coming in behind the system "the first ...

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

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

Widespread 90s, even perhaps a few 100s, will bake much of the eastern two-thirds of the country in a dangerous heat wave.

The latest weather forecast shows a heat dome over the East Coast could send temperatures soaring in Massachusetts.

A “significant and extremely dangerous heat wave” is expected to send temperatures soaring across much of the United States ...

Beyond sweltering conditions, the extreme heat is raising the risk of natural disasters, including wildfires and thunderstorms, while potentially exacerbating geological issues. A 'significant and ...

The first significant heat wave of the summer is taking aim at a huge chunk of the United States later this week, and ...

A heat wave will bring the highest temperatures of the year so far, with some areas possibly reaching triple digits, ...

Heat alerts are in effect on Thursday for more than 70 million Americans. Heat alerts are in effect for 16 states from Maine to Kentucky as the dangerous heat wave continues. Boston and Manchester ...

There are hundreds of deaths each year in the U.S. due to excessive heat. Thirteen states in the East from Massachusetts to Kentucky are on alert for more extreme heat before the dangerous ...