空气质量数据提供者: the Bureau of Air Quality, Pennsylvania's Department of Environmental Protection (dep.pa.gov) and Air Now - US EPA (airnow.gov)
请注意,PM 2.5 (细颗粒物)的测量值取自该站: USA:Pennsylvania/Allegheny/Liberty and the measurements for PM10 (respirable particulate matter), O3 (ozone) and CO (carbon monoxide) are taken from the station: Glassport High Street, Allegheny, Pennsylvania