Daily Report

Ozone Eight-Hour Maximum (PPB)

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

10/26 10/27 10/28 10/29 10/30 10/31 11/01

San Joaquin

Stockton-University 35 34 25 26 39 37 35

Manteca

Tracy-Airport 41 39 35 36 45 42 45

Stanislaus

Modesto-14th 42 39 37 32 42 40 42

Turlock 42 38 27 39 38 41

Merced

Merced-M St.

Merced-Vierra 44 39 37 44 38 40

Madera

Madera-City 45 38 42 44 28 41

Madera 43 36 40 42 27 39

Fresno

Fresno-SSP 47 40 38 42 51 26 40

Clovis 46 42 38 46 54 27 39

Fresno-Garland 43 38 35 36 47 22 38

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 46 41 37 42 51 22 40

Parlier 43 39 38 40 48 21 39

Tranquillity 41 38 40 41 47 37 41

Huron

Kings

Hanford 47 41 41 51 24 40

Corcoran

Tulare

Visalia-Ashland 47 41 43 42 51 27 40

Porterville 45 39 41 43 49 28 37

Ash Mountain-SNP 49 49 51 41 32

Kern

Shafter 53 40 42 48 45 31 36

Oildale 58 49 48 57 52 37 39

Bakersfield-Gold

Bakersfield-Calif 51 41 43 48 45 24 36

Bakersfield-Muni 51 40 41 50 44 25 34

Edison 49 44 45 50 50 30 35

Arvin-DiGiorgio 48 44 42 51 56 30 33

Maricopa 55 47 47 54 51 38 36

Lebec

District Maximum 58 49 49 57 56 42 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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Monday, November 2, 2026 Page 1 of 1