Site

State

PM AQI* (ug/m3)

Portola

CA

28

Seeley Elementary School

MT

28

Riverside - Rubidoux

CA

27

Salmon PM2.5

ID

26

Cave In Rock-Park Ave

IL

26

Hurst Road

AK

22

Larwill

IN

21

Clarksville

TN

18

Otay Mesa - Donovan

CA

18

Dayton - Sinclair

OH

18