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

On the first official day of summer, millions of Americans already under heat warnings. These Oklahoma cities are hotter than ...

The current heat wave in the Midwest and East is bringing operational impacts for Amtrak and commuter rail systems. Amtrak ...

The hottest temperatures will start in the Great Plains, then move to the Midwest, the Great Lakes, and the East Coast ...

"A dangerous, widespread heat wave will bake the central and eastern U.S., bringing the hottest temperatures of the year and uncomfortably muggy air to the Midwest and Northeast that in some areas ...

A Midwest heat dome is driving high temperatures and high humidity that will push the Chicago heat index into the triple ...

Last year was the hottest ever recorded, and 2025 is shaping up to follow suit. This spring has already ranked among the warmest on record across the contiguous United States, and a recent heat wave ...

A few locations could approach or top 100 degrees, including Denver, which happens only twice a year on average, said Weather ...