Site

State

PM AQI* (ug/m3)

Burns - Washington St.

OR

12

Twisp-Glover St

WA

10

The Dalles - Cherry Heights

OR

9

Colville-E 1st St

WA

9

Port Angeles-E 5th St

WA

8

Oakridge - Willamette Activ...

OR

7

John Day Dayton St

OR

7

Seattle-Duwamish

WA

7

Medford Welch & Jackson

OR

7

Lyons

OR

6