Site

State

PM AQI* (ug/m3)

Sunnyside-S 16th

WA

43

Toppenish-Yakama Tribe

WA

40

Yakima-4th Ave

WA

39

Eugene - Amazon Park

OR

36

Eugene - Highway 99

OR

28

Salem - State Hospital

OR

25

Roseburg - Garden Valley Blvd.

OR

25

Portland Near Road

OR

24

Eugene - Wilkes Dr.

OR

24

Kennewick-Metaline

WA

23