Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

12

Pinehurst

ID

10

Billlings Lockwood

MT

9

Seeley Elementary School

MT

9

Rossiter Pump House

MT

9

Thompson Falls HS

MT

7

Sandpoint U of I

ID

7

Fargo NW

ND

6

French Town - Beckwith

MT

6

St. Maries

ID

6