smog

Climate Change To Bring More Smoggy Days To Pittsburgh

Sep 2, 2020
Keith Srakocic / AP

Pollution levels in American cities have fallen in the decades since the passage of clean air laws in the 1970s. And even though cars and factories are emitting less, days with high smog might increase in the years to come. The reason: climate change.

Gene J. Puskar / AP

The day after Pennsylvania, 14 other states and the District of Columbia sued the Environmental Protection Agency over its plan to delay implementation of new clean air standards, the EPA reversed course and says it will implement it on time.

Walter Stein / AP

In 1948, twenty people died when thick smog settled over the small town of Donora, just south of Pittsburgh. But is the city prepared if it happens again?

Pittsburgh Air Is Still Bad, But It Is Getting Better

Dec 27, 2016
Gene J. Puskar / AP Photo

Air quality in western Pennsylvania improved in 2016, according to three regional monitors tracked by the Allegheny County Health Department.

“It was a good year in ozone,” said Jayme Graham, the department's air quality manager.

Gov. Tom Corbett signed a bill last week that eliminates requirements for what’s called “summer gas.”

Seven counties in Western Pennsylvania require that a different kind of gasoline be sold during the summer. It evaporates less readily, releasing less of the pollutants that contribute to smog.