Site

State

PM AQI* (ug/m3)

Darrington-Fir St

WA

26

John Day Dayton St

OR

25

Maple Falls-Azure Way

WA

20

Cave Junction Forest Service

OR

19

Yakima-4th Ave

WA

17

Bellingham Pacifc

WA

16

Omak-Colville Tribe

WA

14

Toppenish-Yakama Tribe

WA

14

Ashland Fire Dept

OR

11

Clarkston-13th St

WA

11