The Philadelphia region is in the middle of another heat wave as temperatures will hit a high of 95 degrees on Monday.

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.

Forecasters warn of 100- to 105-degree heat index values through Tuesday, with potential storms offering limited relief.

Heat and humidity will once again smother the eastern half of the country this week, pushing the heat index to dangerous ...

A heat advisory has been issued for Monday, Tuesday and Wednesday for heat indices forecasted to reach 100 degrees for the ...

ABC News Meteorologist Somara Theodore reports on the life-threatening heat wave with more that 130 million Americans under ...

You'll want to keep the umbrella handy, too, because scattered showers and storms develop between 2 p.m. and 4 p.m., moving ...

In many areas of the state, extreme heat warnings have already been issued for the upcoming weekend. Here's what to know.

Nashville's NWS issues a Heat Advisory warning of extreme temperatures and high humidity until Wednesday evening.

This extreme heat is more than uncomfortable. It can kill. More than 500 New Yorkers die from heat-related causes each year, ...

Rising temperatures into the 90s and stifling humidity have prompted heat advisories from Monday morning through Wednesday ...

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