Site

State

PM AQI* (ug/m3)

LOCKLAND

TN

19

United Ave

GA

18

Chesterfield

SC

18

Huntsville Old Airport

AL

17

Mammoth Cave NP

KY

14

CORNER

AL

13

Candor FRO

NC

13

Texarkana New Boston

TX

13

Gainesville

GA

13

Westlake

LA

13