Site
State
PM AQI* (ug/m3)
Portola
CA
46
Calexico - Ethel Street
41
Hanford - S. Irwin Street
39
Fresno-Foundry Park
37
Corcoran
35
Fresno-Pacific
31
Modesto - 14th Street
30
Merced-M St
28
Fresno - Garland
Manteca