Site

State

PM AQI* (ug/m3)

Lancaster DW

PA

35

Chester

PA

28

DETROIT-SW

MI

27

KALAMAZOO

MI

26

York

PA

26

Kittanning

PA

25

St Theodosius

OH

24

Larwill

IN

23

Lancaster

PA

22

LUMS 2

DE

22