Daily Report

Ozone One-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 37 36 33 43 39 39 32

Manteca

Tracy-Airport 43 40 41 51 46 47 39

Stanislaus

Modesto-14th 44 43 41 46 43 44 34

Turlock 43 42 45 41 43 34

Merced

Merced-M St.

Merced-Vierra 43 46 48 49 41 43 33

Madera

Madera-City 45 51 51 35 45 41

Madera 44 53 52 34 44 41

Fresno

Fresno-SSP 45 44 49 57 33 44 42

Clovis 46 45 53 59 33 42 42

Fresno-Garland 43 41 46 52 27 41 39

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 48 43 50 56 31 44 41

Parlier 51 46 50 56 29 43 45

Tranquillity 44 45 48 52 40 44 44

Huron

Kings

Hanford 49 47 46 56 31 44 43

Corcoran

Tulare

Visalia-Ashland 50 50 50 57 34 45 46

Porterville 47 49 51 57 34 43 45

Ash Mountain-SNP 54 51 53 44 36

Kern

Shafter 49 50 54 52 35 42 46

Oildale 57 56 62 57 41 46 50

Bakersfield-Gold

Bakersfield-Calif 50 48 54 49 30 40 47

Bakersfield-Muni 49 48 54 48 31 39 46

Edison 53 54 60 59 33 42 46

Arvin-DiGiorgio 53 53 59 62 35 36 44

Maricopa 52 52 58 54 41 40 47

Lebec

District Maximum 57 56 62 62 46 47 50
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