More than 160 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

More than 160 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

View the latest weather forecasts, maps, news and alerts on Yahoo Weather. Find local weather forecasts for Pittsburgh, United States throughout the world ...

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.TODAY...Mostly sunny in the morning, then becoming partly sunny. Highs in the lower 80s. West winds 5 to 10 mph. .SATURDAY...Mostly sunny. Humid with highs in the upper 80s.

Pittsburgh weather is pleasant through Thursday due to a high-pressure system; light fog and warmth expected, with rain ...