Daily Report

Ozone Eight-Hour Maximum (PPB)

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

08/02 08/03 08/04 08/05 08/06 08/07 08/08

San Joaquin

Stockton-University 52 57 51 45 50 46

Manteca

Tracy-Airport 49 53 54 49 49 56 44

Stanislaus

Modesto-14th 57 66 71x 60 60 62 57

Turlock 54 71x 75x 64 64 64 59

Merced

Merced-M St.

Merced-Vierra 48 63 71x 64 61 58 57

Madera

Madera-City 53 66 76x 73x 69 61 63

Madera 55 62 70 71x 67 61 65

Fresno

Fresno-SSP 58 68 69 74x 70 63 66

Clovis 62 66 76x 83x 78x 68 75x

Fresno-Garland 58 66 69 74x 71x 64 69

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 65 74x 70 75x 75x 63 70

Parlier 64 69 67 75x 83x 68 67

Tranquillity 52 59 66 61 59 58 60

Huron

Kings

Hanford 57 63 67 72x 69 64 64

Corcoran

Tulare

Visalia-Ashland 56 68 73x

Porterville 66 66 75x 77x 73x 72x 70

Ash Mountain-SNP 72 67 75x 86x 85x 78x 76x

Kern

Shafter 64 60 70 75x 68 69 67

Oildale

Bakersfield-Gold

Bakersfield-Calif 63 53 66 72x 70 64 64

Bakersfield-Muni 60 55 65 70 71x 67 66

Edison 70 64 77x 78x 82x 79x 77x

Arvin-DiGiorgio 61 56 69 75x 73x 73x 72x

Maricopa 65 62 73x 76x 75x 64 68

Lebec

District Maximum 72 74 77 86 85 79 77
Maximum Measured
Value for This Year
 
PollutantMaximum
O3-1hr (ppb)98
O3-8hr (ppb)84
PM 10 (µg/m³)97
PM 2.5 (µg/m³)49.5
Unofficial Days Over the Federal and State Standards¹
 
Federal 2015 8-Hr Ozone 35
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 16
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 5
  Federal 1-Hr Ozone 0
State 1997 8-Hr Ozone 0
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 70
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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Sunday, August 9, 2026 Page 1 of 1