Site

State

PM AQI* (ug/m3)

Potosi

WI

37

Lancaster DW

PA

36

Carlisle

PA

31

Lancaster

PA

31

State College

PA

31

G.T.Craig

OH

29

Hammond-167th St

IN

29

Marshall

MN

28

APPLETON AAL

WI

28

Emmetsburg, ILCC

IA

27