Site

State

PM AQI* (ug/m3)

Clinton, Chancy Park

IA

45

Eau Claire

WI

39

East Chicago - Marina

IN

36

Ponca City

OK

35

South Bend-Shields Dr

IN

35

Davenport, 10th & Vine

IA

35

LACROSSE DOT

WI

34

PERKINSTOWN

WI

34

Sunnyside-S 16th

WA

34

St. Paul-Harding H.S.

MN

33