Site

State

PM AQI* (ug/m3)

John Day Dayton St

OR

12

Marysville-7th Ave

WA

9

Colville-E 1st St

WA

9

Lyons

OR

9

Maple Falls-Azure Way

WA

8

Baker City - Forest Service

OR

8

Colbert-Greenbluff

WA

8

Burns - Washington St.

OR

8

Seattle-South Park

WA

7

Klamath Falls - Peterson Sc...

OR

6