Site

State

PM AQI* (ug/m3)

John Day Dayton St

OR

15

Yakima-4th Ave

WA

12

Oakridge - Willamette Activ...

OR

12

Toppenish-Yakama Tribe

WA

11

Clarkston-13th St

WA

11

Sunnyside-S 16th

WA

11

Baker City - Forest Service

OR

11

Colville-E 1st St

WA

10

Twisp-Glover St

WA

10

Sweet Home - Fire Department

OR

9