Site

State

PM AQI* (ug/m3)

Seattle-South Park

WA

10

Sunnyside-S 16th

WA

10

Seattle-10th & Weller

WA

10

Tacoma-S 36th St

WA

10

Portland Near Road

OR

9

Tukwila_Allentown

WA

9

Seattle-Duwamish

WA

8

Lyons

OR

8

Tacoma-Alexander Ave

WA

8

Custer-Loomis (SO-AQS)

WA

8