Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

21

Lewiston

ID

10

Sandpoint U of I

ID

9

Pinehurst

ID

9

Seeley Elementary School

MT

9

St. Maries

ID

9

Bismarck Residential

ND

8

RYDER

ND

8

Grangeville

ID

8

Plummer CDA Tribe

ID

7