بيانات جودة الهواء مقدمة من: the Bureau of Air Quality, Pennsylvania's Department of Environmental Protection (dep.pa.gov) and Air Now - US EPA (airnow.gov)
لاحظ أن قياس PM 2.5 (الجسيمات الدقيقة) مأخوذ من المحطة: 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