Site
State
PM AQI* (ug/m3)
Evansville-Buena Vista
IN
18
HOUSTON
IL
17
Lancaster DW
PA
Indpls-W.18th St
Iowa City, Hoover School
IA
16
Oldtown
MD
Indpls - I-70 E
KNIGHT_P
Allentown
Indpls-Washington Park
15