Site

State

PM AQI* (ug/m3)

Maple Falls-Azure Way

WA

21

La Pine Rural Fire Dept

OR

17

Marysville-7th Ave

WA

15

Tacoma-L St

WA

14

Omak-Colville Tribe

WA

14

Seattle-Duwamish

WA

13

Kent-James & Central

WA

13

Seattle-10th & Weller

WA

13

Oakridge - Willamette Activ...

OR

13

Sunnyside-S 16th

WA

12