Site

State

AQI*

Altoona

PA

48

Stockton - Hazelton Street

CA

42

State College

PA

42

Anderson

CA

41

Cave Junction Forest Service

OR

39

Turlock - S. Minaret Street

CA

38

DETROIT - W LAFAYETTE

MI

36

Modesto - 14th Street

CA

35

Allentown

PA

34

Portola

CA

34