Site
State
PM AQI* (ug/m3)
Indpls-W.18th St
IN
19
Keene
NH
16
WAUKESHA - CLEVELAND AVE
WI
Weymouth
MA
Greenfield
DESPLNS
IL
South Bend-Shields Dr
15
Boston-Von Hillern
14
SPRINGFIELDSP
Lawrenceville
PA