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

As many as 250 daily temperature records could be tied or broken this week as dozens of states in the East Coast, Midwest and ...

An extremely dangerous heat wave is predicted to hit the Midwest and the East Coast on Monday and Tuesday, with the National ...

An extremely dangerous heat wave is underway for the eastern half of the United States as a potent heat dome reaches its peak ...

An "extremely dangerous heat wave" is continuing to scorch a huge area of the eastern United States June 23, affecting tens ...

DC's heat wave is dangerous. Hydrate smart, avoid caffeine, wear light clothes, and rest often. If you feel off, cool down ...

A heat dome is affecting parts of the East Coast and Midwest, leading to record-breaking temperatures just as summer gets ...

Warnings are in place from Missouri and Illinois to Indiana, Ohio and Michigan, where conditions may persist through midweek.

A heat dome occurs when a large area of high pressure in the upper atmosphere acts as a reservoir, trapping heat and humidity ...

A potentially life-threatening heat wave hit the East Coast of the United States on Monday, with temperatures expected to climb to 40 degrees Celsius (104 F) in the New York metropolitan area.

The rare June heat wave broke about 20 records on Sunday and is expected to break more on Monday. According to The Weather ...

Tens of millions of people across the Midwest and East are enduring another sweltering day of dangerously hot temperatures as ...