Site

State

PM AQI* (ug/m3)

Bismarck Residential

ND

20

Libby Courthouse

MT

15

Broadus

MT

14

Hannover

ND

13

Lostwood NWR

ND

13

St. Maries

ID

13

Lake Ilo

ND

12

RYDER

ND

11

Fargo NW

ND

11

Seeley Elementary School

MT

11