Site

State

PM AQI* (ug/m3)

Indpls-W.18th St

IN

30

Liberty (SAHS)

PA

27

TRINITY (GHIB)

MI

27

Steubenville

OH

25

Anderson-Eastside Elem. Sch

IN

24

GRAND RAPIDS - MONROE

MI

23

Canton

OH

22

Evansville-Buena Vista

IN

22

ALLEN PARK

MI

22

Indpls - I-70 E

IN

21