Widespread 90s, even perhaps a few 100s, will bake much of the eastern two-thirds of the country in a dangerous heat wave.

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

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

Temperatures will soar to the 90s the next several days, with the humidity making it feel more like 100 plus degrees.

TODAY - Severe Weather Alert Day: Near-record heat with heat indices near 100°. Hazy sunshine, high: 95°, low: 74°. TUESDAY - Severe Weather Alert Day: Near-record heat with heat indices between 100° ...

An extremely dangerous heat wave is predicted to hit the Midwest and the East Coast on Monday and Tuesday, with the National ...

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 ...

Tens of millions of people across the Midwest and East endured dangerously high temperatures again on Sunday as a rare June ...

Tens of millions of people across the Midwest and East endured dangerously hot temperatures again on Sunday as a rare June ...

Tens of millions of people across the Midwest and East endured dangerously hot temperatures again Sunday as a sprawling June ...

Tens of millions of people across the Midwest and East endured dangerously hot temperatures again on Sunday as a rare June heat wave that gripped much of the U.S. was expected to last well into this ...

Tens of millions of people across the Midwest and East endured dangerously hot temperatures again on Sunday as a sprawling June heat wave that gripped much of the U.S. was expected to last well into ...