Site

State

PM AQI* (ug/m3)

Sunnyside-S 16th

WA

10

Spokane-E Broadway Ave (US)

WA

9

Seattle-10th & Weller

WA

8

Tacoma-S 36th St

WA

8

Seattle-Duwamish

WA

8

Colbert-Greenbluff

WA

8

Springfield City Hall

OR

8

Auburn M St SE

WA

8

Clarkston-13th St

WA

8

Tacoma-L St

WA

8