Ozone Eight-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 36 39 45 50 58 77 40

Manteca

Tracy-Airport 38 41 49 56 64 66 43

Stanislaus

Modesto-14th 40 43 49 57 71 81 45

Turlock 42 46 52 66 69 75 51

Merced

Merced-Coffee 44 45 51 60 66 72 55

Madera

Madera-City 44 45 53 63 72 76 76

Madera 43 51 62 68 75 74

Fresno

Fresno-SSP 43 43 53 66 74 76 76

Clovis 45 46 55 68 73 71

Fresno-Garland 45 45 56 69 77 78 73

Fresno-Drummond 43 43 55 68 79 76 69

Parlier 50 45 60 71 79 78 68

Tranquillity 39 41 49 55 62 71 56

Huron

Kings

Hanford 44 44 54 69 76 73 62

Corcoran

Tulare

Visalia, Church 47 43 57 71 75 71 62

Porterville 45 40 50 62 65 64 55

Ash Mountain-SNP 61 55 62 68 75 73 74

Lower Kaweah-SNP 55 50 54 60 67 67 69

Kern

Shafter 47 47 53 67 74 75 62

Oildale 48 47 55 69 74 76 66

Bakersfield-Calif 47 46 54 70 75 77 66

Bakersfield-Muni 44 45 53 68 75 77 63

Edison 52 50 58 73 81 86 65

Arvin-DiGiorgio 49 44 55 73 79 75 57

Maricopa 49 47 53 71 75 78 69

Lebec

District Maximum 61
55
62
73
81
86
76

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