Ozone One-Hour Maximum (PPB)

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

09/09 09/10 09/11 09/12 09/13 09/14 09/15

San Joaquin

Stockton-Hazelton 41 43 50 57 62 98 44

Manteca

Tracy-Airport 44 45 52 61 68 76 50

Stanislaus

Modesto-14th 49 47 54 65 76 102 51

Turlock 50 51 58 70 84 87 57

Merced

Merced-Coffee 48 49 55 64 72 76 61

Madera

Madera-City 48 49 57 70 86 85 88

Madera 47 55 72 82 84 86

Fresno

Fresno-SSP 46 45 57 79 91 86 83

Clovis 47 49 59 79 84 76

Fresno-Garland 48 48 59 80 91 89 78

Fresno-Drummond 47 45 59 80 97 84 75

Parlier 55 50 70 85 95 89 78

Tranquillity 43 43 54 60 65 79 66

Huron

Kings

Hanford 45 48 58 80 92 78 69

Corcoran

Tulare

Visalia, Church 51 46 64 82 83 78 73

Porterville 49 42 55 70 70 67 61

Ash Mountain-SNP 70 58 68 75 81 77 81

Lower Kaweah-SNP 64 53 61 67 75 74 76

Kern

Shafter 49 50 56 71 76 78 68

Oildale 49 49 57 73 80 80 76

Bakersfield-Calif 50 49 55 75 80 83 75

Bakersfield-Muni 46 47 57 76 84 86 72

Edison 59 51 67 86 97 95 70

Arvin-DiGiorgio 61 50 66 89 93 87 64

Maricopa 53 51 56 74 78 84 75

Lebec

District Maximum 70
58
70
89
97
102
88

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 0
Federal 1-Hr Ozone 0

O3-1hr (ppb) 110
PM10 State 24-hr 76
State 1-Hr Ozone 20

O3-8hr (ppb) 93
PM2.5 Federal 2006 24-hr 10
Federal 2008 8-Hr Ozone 57

PM 10 (µg/m³) 129
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 9

PM 2.5 (µg/m³) 53
State 1997 8-Hr Ozone 79
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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Monday, September 16, 2019 Page 1 of 1