Ozone One-Hour Maximum (PPB)

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 23 22 16 33 33 25

Manteca

Tracy-Airport 31 33 29 14 26 32

Stanislaus

Modesto-14th 38 31 37 22 37 35

Turlock 38 30 32 26 38 36 34

Merced

Merced-M St.

Merced-Coffee 40 35 28 29 39 37 35

Madera

Madera-City 40 37 36 34

Madera 42 35 33 23 36 35 30

Fresno

Fresno-SSP 35 36 32 21 34 37 26

Clovis 40 36 30 17 32 35 31

Fresno-Garland 35 29 15 32 36 30

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 37 28 29 16 31 35 27

Parlier 41 35 32 15 33 36 37

Tranquillity 36 33 32 25 33 34 31

Huron

Kings

Hanford 32 33 20 31 37 30

Corcoran

Tulare

Visalia-Ashland 43 35 33 18 35 35 37

Porterville 43 35 34 15 35 33 38

Ash Mountain-SNP 42 34 33 34 34 31

Lower Kaweah-SNP

Kern

Shafter 40 38 34 18 32 36 38

Oildale 41 38 21 36 40 41

Bakersfield-Gold

Bakersfield-Calif 30 30 26 14 27 32 33

Bakersfield-Muni 34 37 33 14 30 34 35

Edison 42 35 14 35 31

Arvin-DiGiorgio 41 41 35 13 34 36 40

Maricopa 41 39 36 34 34 37 40

Lebec

District Maximum 43
42
38
34
39
40
41

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