Site

State

PM AQI* (ug/m3)

Seeley Elementary School

MT

21

Libby Courthouse

MT

9

Broadus

MT

9

Butte Greely School

MT

7

Billlings Lockwood

MT

7

Pinehurst

ID

7

Fargo NW

ND

6

French Town - Beckwith

MT

6

Dillon

MT

6

Thompson Falls HS

MT

5