Site

State

PM NowCast (ug/m3)

Maple Falls-Azure Way

WA

23

Eugene - Highway 99

OR

13

Yacolt-Yacolt Rd

WA

12

Cottage Grove City Shops

OR

11

Roseburg - Garden Valley Blvd.

OR

11

Colbert-Greenbluff

WA

10

Portland Near Road

OR

10

Spokane-E Broadway Ave (US)

WA

9

Eugene - Amazon Park

OR

9

John Day Dayton St

OR

9