Site

State

PM AQI* (ug/m3)

John Day Dayton St

OR

27

Bend - Pump Station

OR

14

Marysville-7th Ave

WA

14

La Pine Rural Fire Dept

OR

14

Twisp-Ewell St

WA

13

Maple Falls-Azure Way

WA

13

Toppenish-Yakama Tribe

WA

12

Yakima-4th Ave

WA

12

Omak-Colville Tribe

WA

11

Grants Pass - Parkside School

OR

11