Site

State

PM NowCast (ug/m3)

Walla Walla-12th St

WA

17

Yakima-4th Ave

WA

16

Hillsboro - Hare Field

OR

15

Colville-E 1st St

WA

14

Portland Near Road

OR

13

Lyons

OR

12

Corvallis - Circle Blvd.

OR

11

John Day Dayton St

OR

11

The Dalles - Cherry Heights

OR

10

Pendleton - McKay Creek

OR

10