Site

State

PM AQI* (ug/m3)

Carlisle

PA

50

Porterville-NFS

CA

47

Bakersfield - California Ave

CA

44

Portola

CA

43

Harrisburg

PA

42

Visalia - N. Church Street

CA

40

Salladasburg

PA

39

Danbury

CT

38

Hanford - S. Irwin Street

CA

38

Allentown

PA

37