PM25 24 Hour Average (µg/m3)

The information in this report is based on preliminary data and is subject to change.

11/30 12/01 12/02 12/03 12/04 12/05 12/06

San Joaquin

Stockton-University 10.4 17.3 13.3 8.1 10.2 14.8

Manteca

Tracy-Airport 3.7 1.7 2.7 6.1 3.0 1.5

Stanislaus

Modesto-14th 17.2 10.4 23.2 11.4 8.6 11.3 13.0

Turlock 13.3 7.5 12.3 7.8 3.1 6.7 8.5

Merced

Merced-M St. 15.5 11.7 12.8 8.4 9.7 9.0 8.8

Merced-Coffee 12.7 9.5 10.2 6.0 3.2 4.7 7.8

Madera

Madera-City 12.2 10.4 6.8 9.8 2.7 5.5 6.9

Madera

Fresno

Fresno-SSP

Clovis 12.7 6.6 4.0 10.1 1.8 5.1 6.9

Fresno-Garland 16.9 8.1 7.5 11.0 2.4 6.5 9.1

Fresno-Foundry 17.6 10.1 8.1 10.6 3.6 6.7 14.2

Fresno-Pacific 15.2 10.2 6.5 11.5 2.5 7.0 10.0

Fresno-Drummond

Parlier

Tranquillity 4.7 5.2 4.2 6.9 3.2 1.4 2.6

Huron 5.5 3.1 1.9 3.7 3.1 2.8 1.7

Kings

Hanford 18.8 13.8 6.6 13.0 8.2 9.0 11.9

Corcoran 14.7 13.7 6.9 14.4 9.3 8.8 8.0

Tulare

Visalia-Ashland 16.2 7.7 4.2 12.7 3.5 10.8 12.2

Porterville 11.2 6.5 2.9 10.0 3.2 5.6 6.2

Ash Mountain-SNP 2.1 2.4 1.0 1.0 1.0 1.0 1.0

Lower Kaweah-SNP

Kern

Shafter

Oildale

Bakersfield-Gold 23.5 16.5 6.9 27.4 7.7 11.8 11.9

Bakersfield-Calif 17.7 12.3 2.2 17.9 6.0 6.1 6.0

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec 4.2 1.0 1.0 1.0 1.0 2.5 1.7

District Maximum 23.5
16.5
23.2
27.4
9.7
11.8
14.8

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum Federal 2015 8-Hr Ozone 77
Federal 1997 24-hr PM2.5 0

Federal 2008 8-Hr Ozone 54
Federal 24-hr PM10 0

O3-1hr (ppb) 106
Federal 1997 8-Hr Ozone 7
State 1-Hr Ozone 16

O3-8hr (ppb) 91
Federal 1-Hr Ozone 0
State 1997 8-Hr Ozone 77

PM 10 (µg/m³) 152
Federal 2006 24-hr PM2.5 40
State 24-hr PM10 216

PM 2.5 (µg/m³) 62.9
¹Data affected by smoke, high winds, fireworks, and etc. and which exceeded a federal standard are denoted with
an ‘x’ in the table above. Values marked with an ‘x’ are not included in the tallies above.
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Wednesday, December 7, 2022 Page 1 of 1