Site

State

PM AQI* (ug/m3)

E Providence

RI

16

SPRINGFIELDSP

MA

15

CCRI Providence

RI

14

Near Road

RI

14

Hartford-Huntley

CT

14

Rider University

NJ

14

Greenfield

MA

13

DESPLNS

IL

13

ChelmsfordNR

MA

12

Weymouth

MA

12