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

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

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

"Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors," an ...

A heat wave hit much of the central U.S. over the weekend, while snow and cool temperatures arrived in the Northwest.

Sweltering 100-degree temperatures could be headed to central South Carolina early next week, according to the National ...

A harrowing map from the National Weather Service revealed the exact date and time temperatures could plummet to -60 degrees ...