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.

08/12 08/13 08/14 08/15 08/16 08/17 08/18

San Joaquin

Stockton-Hazelton 54 56 50 56 62 58 63

Manteca

Tracy-Airport 48 52 50 54 62 69 74

Stanislaus

Modesto-14th 52 58 51 60 68 66 68

Turlock 58 69 58 65 71 71 70

Merced

Merced-Coffee 56 69 62 64 64 70 64

Madera

Madera-City 51 62 60 59 63 65 56

Madera 49 58 58 58 60 64 55

Fresno

Fresno-SSP 52 60 60 61 64 67 57

Clovis 60 63 66 67 68 75 62

Fresno-Garland 60 63 65 65 67 70 61

Fresno-Drummond 57 60 62 61 63 66 55

Parlier 58 64 69 66 68 72 66

Tranquillity 53 60 60 60 64 63 65

Huron

Kings

Hanford 57 59 61 65 67 50

Corcoran

Tulare

Visalia, Church 65 62 66 69 71 70 68

Porterville 56 55 56 60 62 62 55

Ash Mountain-SNP 76 55

Lower Kaweah-SNP 68 71 80 74 75 79 78

Kern

Shafter 61 58 65 69 71 69 59

Oildale 63 59 67 72 77 72 66

Bakersfield-Calif 64 60 68 72 77 72 64

Bakersfield-Muni 61 58 65 70 78 70 63

Edison 70 66 73 81 86 x 81 70

Arvin-DiGiorgio 66 63 74 81 88 x 80 68

Maricopa 68 69 75 70 59

Lebec

District Maximum 70
71
80
81
88
81
78

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) 121
PM10 State 24-hr 115
State 1-Hr Ozone 27

O3-8hr (ppb) 90
PM2.5 Federal 2006 24-hr 17
Federal 2008 8-Hr Ozone 47

PM 10 (µg/m³) 153
PM2.5 Federal 1997 24-hr 4
Federal 1997 8-Hr Ozone 2

PM 2.5 (µg/m³) 103
State 1997 8-Hr Ozone 72
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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Sunday, August 19, 2018 Page 1 of 1