Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

18

Seeley Elementary School

MT

12

Pinehurst

ID

11

St. Maries

ID

11

Plummer CDA Tribe

ID

9

Sandpoint U of I

ID

9

Grangeville

ID

9

Kamiah

ID

8

Great Falls Overlook Park

MT

7

Hannover

ND

6