Site

State

PM AQI* (ug/m3)

East St. Louis

IL

16

GC_MAD

IL

15

Branch Street

IL

15

Forest Park

MO

14

BLAIR STREET

MO

14

Liberty (SAHS)

PA

14

LANSING

MI

14

Lancaster DW

PA

13

DEARBORN

MI

12

Charleroi

PA

12