Site

State

PM AQI* (ug/m3)

Bad River Tribal School

WI

21

RUTLAND

VT

20

Burlington

VT

18

Iowa City, Hoover School

IA

15

Potosi

WI

15

Taft

OH

14

Minneapolis-Near Road

MN

14

Davenport, 10th & Vine

IA

14

Preble County

OH

14

Detroit Lakes

MN

14