Daily Report

Ozone One-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 59 62 58 50 55 50

Manteca

Tracy-Airport 57 56 61 53 56 59 48

Stanislaus

Modesto-14th 66 77 79x 66 68 70 61

Turlock 60 78x 85x 71 67 70 65

Merced

Merced-M St.

Merced-Vierra 54 69 82x 70 67 63 62

Madera

Madera-City 59 79 86x 78x 73 70 65

Madera 58 67 73 76x 73 66 71

Fresno

Fresno-SSP 69 83 83 81x 79 67 73

Clovis 82 80 96x 91x 95x 75 85x

Fresno-Garland 78 78 82 77x 77x 68 74

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 84 99x 77 82x 83x 68 75

Parlier 74 80 79 83x 94x 78 71

Tranquillity 55 67 73 69 68 63 71

Huron

Kings

Hanford 61 69 72 77x 73 70 68

Corcoran

Tulare

Visalia-Ashland 80 87 84x

Porterville 70 76 81x 90x 80x 82x 77

Ash Mountain-SNP 76 72 83x 94x 92x 81x 81x

Kern

Shafter 71 66 72 88x 74 78 74

Oildale

Bakersfield-Gold

Bakersfield-Calif 74 62 70 82x 74 70 69

Bakersfield-Muni 74 67 74 74 79x 74 73

Edison 83 78 90x 81x 85x 99x 87x

Arvin-DiGiorgio 65 71 85 84x 83x 86x 79x

Maricopa 69 68 77x 81x 79x 67 73

Lebec

District Maximum 84 99 96 94 95 99 87
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