Site

State

PM AQI* (ug/m3)

Kamiah

ID

24

Kamiah-ID

ID

16

Libby Courthouse

MT

15

Lewiston

ID

14

Hamilton PS 46

MT

13

Fargo NW

ND

12

St. Maries

ID

11

Thompson Falls HS

MT

9

Butte Greely School

MT

9

Sandpoint U of I

ID

9