Site
State
PM AQI* (ug/m3)
HOLLAND
MI
30
JENISON
GRAND RAPIDS
29
NORTHBRK
IL
28
Indpls-Washington Park
IN
Ogden Dunes
27
Indpls-W.18th St
26
Anderson-Eastside Elem. Sch
Evansville-Buena Vista
South Bend-Shields Dr
25