Site

State

PM AQI* (ug/m3)

MOUNDSVILLE

WV

26

Cincinnati Near Road

OH

17

Liberty (SAHS)

PA

15

Chester

PA

14

Madawaska PSB

ME

14

GC_MAD

IL

14

NEW

PA

14

Carthage

OH

13

East St. Louis

IL

13

Lancaster DW

PA

13