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 PM2.5 (fine particulate matter), PM10 (respirable particulate matter), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: Beaver Falls, Pennsylvania