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

The first major heat wave of the summer is firing up across the eastern half of the U.S. this week, with major cities along ...

With a heat wave expected in Philly this week, Bill Henley explains the importance of staying in the shade and avoiding ...

The Philadelphia area is bracing for a scorching heatwave that will see temperatures reach the triple digits with added ...

Forecasts as of June 18, 2025 at 2am ET; Chart: Erin Davis/Axios Visuals Temperatures in Philly could soar into the triple digits this week for the first time in more than a decade, part of a wave of ...