St. Louis, Chicago and Des Moines were among the cities that saw heat indexes hit triple digits on Saturday, with the East ...

The head index is expected to reach around 105 and an extreme heat warning is in effect until Monday, according to the ...

The city's outdoor pools opened for the summer on Saturday, coinciding with the year's first major heat wave. Eager residents ...

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

A dangerous, record-breaking heat wave will spread over the eastern United States and is expected to last several days.

Chicagoans can expect intense heat compounded by muggy humidity for the next several days. The National Weather Service has ...

A large dome of high pressure anchored over the eastern half of the country is bringing sweltering heat and strong winds to ...

With an Extreme Heat Warning starting Saturday morning and a weekend full of events, heatstroke and heat exhaustion are real ...

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

Record-breaking heat indices — a combination of temperatures and humidity to determine how heat really feels to the body — ...

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

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