Overnight lows can be a particularly dangerous part of a heat wave, said Ashley Ward, director of the Heat Policy Innovation Hub at Duke University. “Your body needs a reprieve,” she said.

Philadelphia and its surrounding areas are experiencing another warm and humid day on Wednesday as a heat wave persists for its fifth consecutive day. According to Fox 29, a heat advisory has been ...

The National Weather Service has issued a Heat Advisory for Philadelphia and its suburbs for temperatures in the 90s that will feel much hotter due to the humidity. The advisory extends into Thursday.

Philadelphia's Office of Emergency Management recommends that anyone out during the heat wave wears and reapplies sunscreen, finds shade, and drinks plenty of water.

The first day comes amid a heat wave, with temperatures once again set to stretch into the 90s. There were early dismissals on Tuesday and Wednesday for 74 schools in the Philadelphia School ...

The heat wave that broke daily record high temperatures across the eastern half of the United States has given way to storms and showers, with a chance for some severe thunderstorms and dangerous ...

A heat dome of high pressure baking the South and Midwest is now spreading its reach into the Northeast to end the week, where feels-like temperatures will skyrocket into the triple digits.

A heat dome of high pressure baking the South and Midwest is now spreading its reach into the Northeast to end the week, where feels-like temperatures will skyrocket into the triple digits.