Site

State

PM AQI* (ug/m3)

Liberty (SAHS)

PA

21

Iowa City, Hoover School

IA

19

East St. Louis

IL

19

APPLETON AAL

WI

17

Branch Street

IL

16

Canton

OH

16

Potosi

WI

16

Terre Haute-Lafayette Ave

IN

16

Davenport, 10th & Vine

IA

16

Horicon Wildlife Area

WI

16