Site

State

PM AQI* (ug/m3)

Auburn M St SE

WA

12

Medford Welch & Jackson

OR

12

Seattle-South Park

WA

12

Sunnyside-S 16th

WA

12

North Bend-North Bend Way (SO)

WA

11

Spokane-E Broadway Ave (US)

WA

9

Toppenish-Yakama Tribe

WA

9

Pendleton - McKay Creek

OR

9

Klamath Falls - Peterson Sc...

OR

9

Eugene - Highway 99

OR

8