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.

10/15 10/16 10/17 10/18 10/19 10/20 10/21

San Joaquin

Stockton-Hazelton 59 47 50 55 27 33 34

Manteca

Tracy-Airport 63 52 54 62 35 41 41

Stanislaus

Modesto-14th 67 54 49 57 31 38 39

Turlock 58 54 47 44 36 37

Merced

Merced-Coffee 58 50 59 56 37 36 34

Madera

Madera-City 64 26 62 68 51 41 38

Madera 63 63 62 70 54 42 37

Fresno

Fresno-SSP 65 69 66 72 61 43 41

Clovis 66 64 64 71 64 40 41

Fresno-Garland 70 65 70 76 64 42 40

Fresno-Drummond 62 54 59 58 38 34

Parlier 71 58 51 75 69 43 42

Tranquillity 56 62 61 60 47 39 39

Huron

Kings

Hanford 69 71 77 86 68 45 41

Corcoran

Tulare

Visalia, Church 71 64 74 72 64 41 38

Porterville 60 60 66 67 65 37 37

Ash Mountain-SNP 56 61 71 79 83 36 43

Lower Kaweah-SNP 52 53 56 62 79 41 38

Kern

Shafter 65 57 71 74 71 44 43

Oildale 69 73 73 76 77 45 48

Bakersfield-Calif 70 78 79 77 82 48 50

Bakersfield-Muni 65 76 72 72 80 42 46

Edison 73 80 77 79 82 44 50

Arvin-DiGiorgio 71 78 77 78 42 48

Maricopa 67 78 84 82 80 45 47

Lebec

District Maximum 73
80
84
86
83
48
50

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) 113
PM10 State 24-hr 146
State 1-Hr Ozone 42

O3-8hr (ppb) 99
PM2.5 Federal 2006 24-hr 8
Federal 2008 8-Hr Ozone 86

PM 10 (µg/m³) 152
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 26

PM 2.5 (µg/m³) 51
State 1997 8-Hr Ozone 117
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, October 22, 2017 Page 1 of 1