Site

State

PM AQI* (ug/m3)

Colville-E 1st St

WA

15

Winthrop-Chewuch Rd

WA

11

Maple Falls-Azure Way

WA

10

Roseburg - Garden Valley Blvd.

OR

10

Twisp-Glover St

WA

10

Portland - SE Lafayette

OR

10

Spokane-Augusta Ave

WA

10

Burns - Washington St.

OR

9

Cave Junction Forest Service

OR

9

Sweet Home - Fire Department

OR

9