Site

State

PM AQI* (ug/m3)

GC_MAD

IL

22

BLAIR STREET

MO

20

Forest Park

MO

19

Branch Street

IL

18

East St. Louis

IL

18

Springfield Ag

IL

18

YPSILANTI

MI

18

KNIGHT_P

IL

17

DEARBORN

MI

16

ALLEN PARK

MI

16