Sunday marked the second straight day of extreme heat across the Midwest and East Coast. Heat indexes on Sunday hit 103 F (39 ...

A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...

Sweltering heat happens every summer, but to get close to the bar of a state's all-time hottest temperature usually takes a heat wave that's on another level.

Millions of Americans are still under weather advisories Wednesday due to the record-breaking heat. Will it change soon?

More than 125 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

Several cities in the eastern United States have faced record high temperatures due to a climate phenomenon known as the ...

For 150 million people across the United States, humidity surged to levels higher than Miami late Monday. Maps show where.

A heat wave is currently affecting about 160 million people, according to the National Weather Service. Here's which states ...

A once-in-a-century heatwave is frying the East Coast of the United States as triple-digit temperatures are forecast to smash daily records across the densely populated region in which more than 150 ...

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

New York’s Central Park tied a record high of 96 degrees for the date Monday, which was set in 1888. In neighboring New ...