Along with the arrival of astronomical summer — which happened at 10:42 p.m. Friday — has come a brutal heat wave, a stretch of extreme weather that means we all should be aware of the potential for ...

More than 150 million Americans are under the highest level extreme heat alerts during a wave of above-average temperatures.

More than 150 million Americans are under the highest level extreme heat alerts during a wave of above-average temperatures.

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

Sunday marked the second straight day of extreme heat across the Midwest and East Coast. Heat indexes on Sunday hit 103 F (39 ...

An expert has tips on how to stay cool during the extreme heat in Pittsburgh. Heat is the leading weather-related cause of ...

Blistering temperatures and busted substations are pushing Pennsylvania's electric grid to the brink. Over 28,000 customers ...

The rare June heat wave broke about 20 records on Sunday and is expected to break more on Monday. According to The Weather ...

Severe weather is possible Tuesday and Wednesday, along with the extreme heat warning in western Pennsylvania.

Pittsburgh faces a severe heat wave with possible record temperatures; the National Weather Service issues warnings.

Whether it’s carrying an umbrella or wearing a hat, every bit of cover is helping in the fight against the blazing sun.