Daily Report

Ozone Eight-Hour Maximum (PPB)

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

10/27 10/28 10/29 10/30 10/31 11/01 11/02

San Joaquin

Stockton-University 34 25 26 39 37 35 27

Manteca

Tracy-Airport 39 35 36 45 42 45 33

Stanislaus

Modesto-14th 39 37 32 42 40 42 29

Turlock 38 27 39 38 41 30

Merced

Merced-M St.

Merced-Vierra 39 37 44 38 40 28

Madera

Madera-City 38 42 44 28 41 34

Madera 36 40 42 27 39 36

Fresno

Fresno-SSP 40 38 42 51 26 40 35

Clovis 42 38 46 54 27 39 37

Fresno-Garland 38 35 36 47 22 38 33

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 41 37 42 51 22 40 36

Parlier 39 38 40 48 21 39 37

Tranquillity 38 40 41 47 37 41 40

Huron

Kings

Hanford 41 41 51 24 40 37

Corcoran

Tulare

Visalia-Ashland 41 43 42 51 27 40 40

Porterville 39 41 43 49 28 37 39

Ash Mountain-SNP 49 49 51 41 32

Kern

Shafter 40 42 48 45 31 36 39

Oildale 49 48 57 52 37 39 45

Bakersfield-Gold

Bakersfield-Calif 41 43 48 45 24 36 40

Bakersfield-Muni 40 41 50 44 25 34 38

Edison 44 45 50 50 30 35 35

Arvin-DiGiorgio 44 42 51 56 30 33 36

Maricopa 47 47 54 51 38 36 43

Lebec

District Maximum 49 49 57 56 42 45 45
Maximum Measured
Value for This Year
 
PollutantMaximum
O3-1hr (ppb)101
O3-8hr (ppb)84
PM 10 (µg/m³)150
PM 2.5 (µg/m³)49.5
Unofficial Days Over the Federal and State Standards¹
 
Federal 2015 8-Hr Ozone 53
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 29
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 15
  Federal 1-Hr Ozone 0
State 2005 8-Hr Ozone 53
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 143
¹Data affected by smoke, high winds, fireworks, 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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Tuesday, November 3, 2026 Page 1 of 1