Extreme humidity and heat will affect about 265 million people across the country this week. Maps show where and when to ...

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

Sunday could break or tie the record high temperature of 97 degrees in Milwaukee. The heat advisory is in effect until 7 p.m.

The National Weather Service has issued extreme heat warnings, heat advisories and air quality alerts for all 21 New Jersey ...

Officials warn of health risks as massive weather system traps sweltering air.

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

On the first day of summer, authorities are warning about a dangerous heat wave that will affect much of the country.

A heat record has been tied for Friday. The highest temperature ever recorded for June 20 was 99. The official National ...

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

Phoenix has broken scores of heat records over the years, but one remains unchallenged: 122 degrees, still the hottest day on ...

Another scorcher Monday with mostly sunny skies and temps soaring into the 90s. High levels of humidity will make the heat ...

WE ARE UNDER AN EXTREME HEAT WARNING IN THE SUSQUEHANNA VALLEY TODAY. THAT MEANS THE HEAT PLUS THE HIGH HUMIDITY IS GOING TO ...