Ozone Eight-Hour Maximum (PPB)

The information in this report is based on preliminary data and is subject to change. The real-time PM10/PM2.5

monitoring equipment is used for air quality forecasting and trend analysis.

06/16 06/17 06/18 06/19 06/20 06/21 06/22

San Joaquin

Stockton-Hazelton 44 44 43 49 49 54 63

Manteca

Tracy-Airport 45 44 55 50 62 66

Stanislaus

Modesto-14th 52 46 49 53 52 60 69

Turlock 46 45 54 59 59 65 74

Merced

Merced-Coffee 40 37 46 49 53 55 60

Madera

Madera-City 54 41 55 56 64 62 71

Madera 53 39 52 54 60 58 69

Fresno

Fresno-SSP 58 45 59 61 68 63 77

Clovis 59 44 54 58 64 65 80

Fresno-Garland 59 42 54 57 64 63 76

Fresno-Drummond 57 42 55 59 66 64 76

Parlier 56 41 57 66 69 71 77

Tranquillity 46 40 54 57 64 62 71

Huron

Kings

Hanford 50 42 55 59 66 64 71

Corcoran

Tulare

Visalia, Church 52 44 59 68 75 77 77

Porterville 47 41 56 64 76 73 73

Ash Mountain-SNP 61 37 57 39

Lower Kaweah-SNP 61 43 53 68 76 82 82

Kern

Shafter 45 41 55 63 71 65 68

Oildale 50 44 60 70 77 72 75

Bakersfield-Calif 51 42 59 70 77 73 77

Bakersfield-Muni 51 42 59 71 78 75 79

Edison 51 42 59 74 82 77 83

Arvin-DiGiorgio 54 42 59 72 76 74 77

Maricopa 55 44 55 61 69 67 70

Lebec

District Maximum 61
46
60
74
82
82
83

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 2
Federal 1-Hr Ozone 0

O3-1hr (ppb) 109
PM10 State 24-hr 62
State 1-Hr Ozone 4

O3-8hr (ppb) 84
PM2.5 Federal 2006 24-hr 16
Federal 2008 8-Hr Ozone 9

PM 10 (µg/m³) 178
PM2.5 Federal 1997 24-hr 4
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 103
State 1997 8-Hr Ozone 20
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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Saturday, June 23, 2018 Page 1 of 1