The first heat wave of summer could bring punishing humidity and triple-digit temperatures to many states east of the Rocky ...

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

June 20 marks the first official day of summer, with millions of Americans already under heat warnings. See cities hotter ...

Meteorologists are warning of a dangerous heat wave that is going to grip the Midwest and Northeast regions of the U.S. this ...

A heat wave is moving in, with over 100 million people from the Midwest to the Northeast on alert for life-threatening heat ...

Heat is the number one killer -- and it’s heading to the most densely populated part of America for a prolonged period.

The National Weather Service called the forecast for above-average temperatures "the first significant heat wave this season.

A potentially record-breaking heat wave is pushing to the East, impacting millions of Americans in several states and cities.

A “significant and extremely dangerous heat wave” is expected to send temperatures soaring across much of the United States ...

States in the Midwest and Northeast will face high temperatures in the coming days during the summer’s first “dangerous” heat ...

It was only a matter of time before a long-lived heat wave would develop in the Midwest and Northeast. This one could last ...