Site

State

PM AQI* (ug/m3)

Mission C43

TX

21

Laredo C313

TX

19

Warner Robins

GA

17

San Antonio Old Hwy90 C677

TX

16

Von Ormy Highway 16

TX

16

Burdens Creek

NC

15

LWATTOWR

NC

15

Northampton

NC

15

Houston North Loop C1052

TX

14

DCNearRoad

DC

14