Site

State

PM AQI* (ug/m3)

Colville-E 1st St

WA

23

John Day Dayton St

OR

23

Mobile-Yakima

WA

20

Prineville - Davidson Park

OR

19

Sunnyside-S 16th

WA

18

Burns - Washington St.

OR

17

Cave Junction Forest Service

OR

17

Yakima-4th Ave

WA

14

Roseburg Fire Dept

OR

14

Walla Walla-12th St

WA

14