空氣質量預報
空氣品質數據提供者: the Bureau of Air Quality, Pennsylvania's Department of Environmental Protection (dep.pa.gov) and Air Now - US EPA (airnow.gov)
Note that the measurements for O3 (ozone) and SO2 (sulfur dioxide) are taken from the station: Charleroi, Pennsylvania and the measurement for NO2 (nitrogen dioxide) are taken from the station: Parkway East, Allegheny, Pennsylvania