Site

State

PM AQI* (ug/m3)

Eau Claire

WI

26

Liberty (SAHS)

PA

26

PERKINSTOWN

WI

25

POTAWATOMI

WI

23

LACROSSE DOT

WI

22

Rochester

MN

21

TROUT LAKE

WI

21

Bad River Tribal School

WI

21

Potosi

WI

20

Iowa City, Hoover School

IA

20