Site

State

PM AQI* (ug/m3)

Seattle-10th & Weller

WA

6

Seattle-South Park

WA

6

Tacoma-S 36th St

WA

5

Mt Vernon-S 2nd St

WA

5

Colbert-Greenbluff

WA

5

Seattle-Duwamish

WA

5

Auburn 29th St

WA

5

Portland - SE Lafayette

OR

5

Anacortes-202 Ave (SO-AQS)

WA

5

Tacoma-Alexander Ave

WA

5