Kristina Serafini | Tribune-Review
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People who live or work in the Mon Valley may notice air pollution is worse than normal on Wednesday.
It’s being caused by high pressure building in the area that will create inversion conditions Wednesday evening, National Weather Service meteorologist Pat Herald said.
Temperature inversions are when warm air traps cold air and pollutants close to the surface, often causing bad smells like sulfur or rotten eggs in the air.
The problem was noticed Tuesday evening, when the Liberty air quality monitor began registering elevated pollution readings that continued Wednesday, according to the Allegheny County Health Department.
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Pittsburghers are all too familiar with the smell of sulfur dioxide emissions, but it s invisible. Now, residents can get a better visual of how air pollutants float across the region on a daily basis.
Carnegie Mellon University’s CREATE Lab has launched PlumePGH, a new map from the makers of the lab’s popular app SmellPGH, which allows users to track the origin of pollution as well as how it correlates with reports of stinky air.
The map shows the four largest emitters of SO2 and other sulfur oxides in Allegheny County: U.S. Steel s Clairton Coke Works, Irvin Works and Edgar Thomson Works, and the Cheswick Generating Station.