Daily Report

Ozone One-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 39 37 36 33 43 39 39

Manteca

Tracy-Airport 45 43 40 41 51 46 47

Stanislaus

Modesto-14th 47 44 43 41 46 43 44

Turlock 48 43 42 45 41 43

Merced

Merced-M St.

Merced-Vierra 50 43 46 48 49 41 43

Madera

Madera-City 53 45 51 51 35 45

Madera 53 44 53 52 34 44

Fresno

Fresno-SSP 53 45 44 49 57 33 44

Clovis 52 46 45 53 59 33 42

Fresno-Garland 49 43 41 46 52 27 41

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 54 48 43 50 56 31 44

Parlier 52 51 46 50 56 29 43

Tranquillity 50 44 45 48 52 40 44

Huron

Kings

Hanford 57 49 47 46 56 31 44

Corcoran

Tulare

Visalia-Ashland 54 50 50 50 57 34 45

Porterville 56 47 49 51 57 34 43

Ash Mountain-SNP 54 51 53 44 36

Kern

Shafter 62 49 50 54 52 35 42

Oildale 67 57 56 62 57 41 46

Bakersfield-Gold

Bakersfield-Calif 61 50 48 54 49 30 40

Bakersfield-Muni 59 49 48 54 48 31 39

Edison 64 53 54 60 59 33 42

Arvin-DiGiorgio 63 53 53 59 62 35 36

Maricopa 62 52 52 58 54 41 40

Lebec

District Maximum 67 57 56 62 62 46 47
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