Site

State

PM AQI* (ug/m3)

John Day Dayton St

OR

30

Omak-Colville Tribe

WA

21

Maple Falls-Azure Way

WA

17

Brewster Mobile

WA

16

Marysville-7th Ave

WA

13

Seattle-10th & Weller

WA

11

Burns - Washington St.

OR

10

Kent-James & Central

WA

10

Tacoma-S 36th St

WA

10

Seattle-Duwamish

WA

10