Site

State

PM AQI* (ug/m3)

Maple Falls-Azure Way

WA

25

Darrington-Fir St

WA

16

La Pine Rural Fire Dept

OR

15

Omak-Colville Tribe

WA

14

Mill City

OR

14

John Day Dayton St

OR

12

Eugene - Highway 99

OR

12

Marysville-7th Ave

WA

11

Yakima-4th Ave

WA

11

Burns - Washington St.

OR

11