Site

State

PM AQI* (ug/m3)

Birney

MT

11

Plummer CDA Tribe

ID

9

Fargo NW

ND

9

Seeley Elementary School

MT

9

Billlings Lockwood

MT

9

Broadus

MT

8

Thompson Falls HS

MT

8

Libby Courthouse

MT

8

Rossiter Pump House

MT

8

French Town - Beckwith

MT

7