Big changes are on the way for the Delaware Valley as the extreme heat gives way to potential severe weather and much cooler temps by the end of the week.

"Everybody has their AC on. Engines are working hard, so therefore a lot of cars are breaking down," said fleet supervisor ...

Philadelphia reached 98 degrees on Tuesday, but with the heat index, temperatures felt like they were warmer than 100 degrees ...

Record-setting temperatures are possible once again Wednesday in the Philadelphia area before storms on Thursday.

Over 120 million Americans across 28 states remain on alert for dangerously hot and humid weather as a heat wave hits parts ...

A sweltering heat wave is keeping over 120 million Americans and 28 states in the United States under alert for dangerously ...

Philadelphia is under a Heat Advisory with a heat index up to 104 degrees; residents advised to stay cool and hydrated.