Site

State

PM AQI* (ug/m3)

Sunnyside-S 16th

WA

6

Ellensburg-Ruby St

WA

6

Seattle-South Park

WA

5

Aberdeen-Division St

WA

5

Clarkston-13th St

WA

5

Springfield City Hall

OR

5

Eugene - Wilkes Dr.

OR

5

Eugene - Amazon Park

OR

5

Oakridge - Willamette Activ...

OR

4

Cottage Grove City Shops

OR

4