Site

State

PM AQI* (ug/m3)

Chelan-Woodin Ave

WA

5

Seattle-South Park

WA

5

Seattle-10th & Weller

WA

5

Marysville-7th Ave

WA

5

Seattle-Duwamish

WA

5

Bremerton-Spruce Ave

WA

5

Colbert-Greenbluff

WA

5

Colville-E 1st St

WA

5

John Day Dayton St

OR

4

Darrington-Fir St

WA

4