A Code Orange Alert is continuing into Monday for the Mon Valley area in Allegheny County.
The air quality action day was declared for fine particulate matter in the Liberty-Clairton Area of Allegheny County, which includes Clairton City, Glassport Borough, Liberty Borough, Lincoln Borough and Port Vue Borough.
According to the Pennsylvania Department of Environmental Protection, a strong temperature inversion on Monday morning has elevated fine particle pollution (PM2.5) levels in this location. While concentrations will decrease by this afternoon with the breaking inversion, levels will remain in the Code Orange range today…