Site

State

PM AQI* (ug/m3)

Seattle-South Park

WA

8

Sunnyside-S 16th

WA

8

Silverton

OR

7

Springfield City Hall

OR

7

Lyons

OR

7

Seattle-10th & Weller

WA

7

Cottage Grove City Shops

OR

7

Eugene - Highway 99

OR

7

Eugene - Amazon Park

OR

7

Portland Near Road

OR

7