Once the Philadelphia region gets past the heat wave, unstable air returns, and the storm door will open through the weekend.

Those triple-digit air temperatures — with the feels-like index even worse because of humidity — are possible in places where ...

An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with ...

Sixteen people were sent to the emergency room for heat-related illness following two New Jersey high school graduations ...

A heat dome occurs when a large area of high pressure in the upper atmosphere acts as a reservoir, trapping heat and humidity ...

An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with ...

PECO is working to fix outages from last week’s storm. But thousands of customers are without power for A/C as temperatures ...

It's oppressive outside today in Pennsylvania, as heat indices may near 110 degrees. When is relief on the way? Here's the ...

Peco said more than 370,000 customers lost power following last week's storm, making it one of the 20 worst in the company's 144-year history.