Site

State

PM AQI* (ug/m3)

Omak-Colville Tribe

WA

20

Colville-E 1st St

WA

15

Burns - Washington St.

OR

14

Clarkston-13th St

WA

14

John Day Dayton St

OR

13

Sunnyside-S 16th

WA

13

Twisp-Glover St

WA

11

Seattle-Duwamish

WA

11

Cave Junction Forest Service

OR

11

Winthrop-Chewuch Rd

WA

11