Site

State

PM AQI* (ug/m3)

Sunnyside-S 16th

WA

12

John Day Dayton St

OR

12

Custer-Loomis (SO-AQS)

WA

11

Omak-Colville Tribe

WA

11

Maple Falls-Azure Way

WA

11

Dallas LaCreole Middle School

OR

10

Marysville-7th Ave

WA

9

Bend - Pump Station

OR

8

Bend NE 8th & Emerson

OR

8

Mobile-Yakima

WA

8