The heat index could reach more than 100 degrees on Monday and Tuesday, according to the National Weather Service.

An intense heat wave threatens millions of people across the Southeast with temperatures reaching 115 degrees through midweek ...

It's always hot in the summer in the U.S. Southeast, but even by the standards of Florida and the Carolinas, the steamy heat ...

As dangerous highs continue in central North Carolina, and heat index temperatures climb past 110 degrees all weekend, the ...

Orlando heat wave triggers Heat Advisory with temperatures reaching mid to upper 90's and heat index up to 110°F.

A double whammy of wildfire smoke blowing into the city and an incoming heat wave has made the city's air dangerous for ...

Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.

The National Weather Service in Paducah has extended its dangerous heat warning, now forecasting extreme heat conditions to last through at least Wednesday. The updated advisory urges residents across ...

The heat will be most severe along and southeast of the I-99/US-220 corridor, where heat index values are likely to exceed ...