Ozone Eight-Hour Maximum (PPB)

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

06/25 06/26 06/27 06/28 06/29 06/30 07/01

San Joaquin

Stockton-University 65 48 47 61 53 35 47

Manteca

Tracy-Airport 58 45 43 50 44 29 40

Stanislaus

Modesto-14th 74 54 53 66 64 40 51

Turlock 79 60 55 70 67 42 53

Merced

Merced-M St.

Merced-Vierra 77 64 59 70 71 48 62

Madera

Madera-City 69 61 59 67 69 55 56

Madera 70 63 59 63 71 x 55 55

Fresno

Fresno-SSP 66 61 58 64 73 x 55 56

Clovis 68 60 56 63 76 x 56 58

Fresno-Garland 57 53 49 53 64 47 50

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 66 58 56 60 73 x 53 56

Parlier 79 x 65 57 64 72 x 57 64

Tranquillity 57 64 57 65 64 45 48

Huron

Kings

Hanford 65 65 56 64 71 56 56

Corcoran

Tulare

Visalia-Ashland 72 x 66 63 61 72 x 62 61

Porterville 73 x 68 63 65 74 x 64 62

Ash Mountain-SNP 93 x 86 x 77 x 74 x 82 x 74 x 78 x

Lower Kaweah-SNP 90 x 83 x 75 x 71 x 77 x 70 73 x

Kern

Shafter 68 61 56 69 71 x 63 54

Oildale 67 57 55 65 69 64 57

Bakersfield-Gold

Bakersfield-Calif 70 x 52 61 66 62 53

Bakersfield-Muni 55 56 68 72 x 64

Edison 74 x 64 62 70 74 x 64 60

Arvin-DiGiorgio 75 x 66 65 70 74 x 67 61

Maricopa 65 60 56 66 69 57 52

Lebec

District Maximum 93
86
77
74
82
74
78

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum Federal 2015 8-Hr Ozone 22
Federal 1997 24-hr PM2.5 0

Federal 2008 8-Hr Ozone 10
Federal 24-hr PM10 0

O3-1hr (ppb) 103
Federal 1997 8-Hr Ozone 3
State 1-Hr Ozone 3

O3-8hr (ppb) 89
Federal 1-Hr Ozone 0
State 1997 8-Hr Ozone 22

PM 10 (µg/m³) 153
Federal 2006 24-hr PM2.5 0
State 24-hr PM10 42

PM 2.5 (µg/m³) 32.2
¹Data affected by smoke, high winds, fireworks, and 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, July 2, 2024 Page 1 of 1