Extreme heat warnings and heat advisories covered swaths of the U.S. from the Midwest to the East Coast on Tuesday.

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

Tens of millions of people across the Midwest and Northeast are in the thick of a dangerous heat wave that will bring ...

Millions and millions of Americans are being warned of "dangerous" heat in more than a dozen states as the summer 2025 season ...

The expansive heat dome will have more than 190 million Americans in the East experiencing temperatures above 90 degrees, but ...

The heat wave is expected to continue into the week putting millions of Americans in the Midwest and Northeast under heat ...

Tens of millions of people across the Midwest and Mid-Atlantic are under heat alerts Monday as a dangerous heat wave that ...

Nearly 170 million people across 28 states are under various heat alerts, the federal agency says. “High temperatures in the ...

Heat alerts have been issued from Colorado to Maine, including more than 150 million Americans. Heat index values in the ...

More than 37 million Americans are under heat advisories across the U.S., according to the National Weather Service. Here's ...

Millions and millions of Americans are ... Over 20 million are under extreme heat warnings. The weather service says an extreme heat watch means residents should be prepared because conditions ...