Site

State

PM AQI* (ug/m3)

Lake George-Lake George RS ...

CO

24

Portola

CA

22

Johnstown

PA

22

Beaver Falls

PA

22

Horicon Wildlife Area

WI

20

Seeley Elementary School

MT

20

Altoona

PA

19

MADISON EAST

WI

19

WAUKESHA - CLEVELAND AVE

WI

19

MILWAUKEE 16TH ST

WI

19