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.

10/10 10/11 10/12 10/13 10/14 10/15 10/16

San Joaquin

Stockton-Hazelton 35 37 32 42 39 37 36

Manteca

Tracy-Airport 41 44 40 50 41 44 41

Stanislaus

Modesto-14th 40 40 34 48 45 38 36

Turlock 42 44 36 49 46

Merced

Merced-Coffee 41 45 40 49 48 43 49

Madera

Madera-City 42 42 51 45 48 45

Madera 42 42 43 49 43 46 49

Fresno

Fresno-SSP 43 43 51 45 43 48

Clovis 46 43 48 58 52 44 51

Fresno-Garland 44 43 44 56 50 44 49

Fresno-Drummond 45 43 47 57 52 43 49

Parlier 46 45 53 60 58 45 54

Tranquillity 41 42 41 49 44 44 52

Huron

Kings

Hanford 42 45 49 56 55 44 53

Corcoran

Tulare

Visalia, Church 42 43 47 56 56 43 54

Porterville 47 48 59 64 63 46 61

Ash Mountain-SNP 54 44 53 60 58 48 53

Lower Kaweah-SNP 55 42 50 57 60 50 54

Kern

Shafter 41 53 52 57 46 57

Oildale 51 44 57 57 63 50 57

Bakersfield-Calif 49 43 56 56 60 49 56

Bakersfield-Muni 49 40 53 53 55 50

Edison 53 44 59 60 50 56

Arvin-DiGiorgio 52 44 56 58 55 46 52

Maricopa 52 47 56 52 57 49 55

Lebec

District Maximum 55
48
59
64
63
50
61

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) 121
PM10 State 24-hr 169
State 1-Hr Ozone 39

O3-8hr (ppb) 90
PM2.5 Federal 2006 24-hr 21
Federal 2008 8-Hr Ozone 70

PM 10 (µg/m³) 166
PM2.5 Federal 1997 24-hr 4
Federal 1997 8-Hr Ozone 8

PM 2.5 (µg/m³) 103
State 1997 8-Hr Ozone 105
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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Wednesday, October 17, 2018 Page 1 of 1