Ozone One-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.

12/07 12/08 12/09 12/10 12/11 12/12 12/13

San Joaquin

Stockton-Hazelton 17 12 18 18 14 25 26

Manteca

Tracy-Airport 34 27 20 29 35 35 27

Stanislaus

Modesto-14th 27 14 21 21 28 29 26

Turlock 30 16 23 20 27 28 29

Merced

Merced-Coffee 23 18 23 19 26 24 28

Madera

Madera-City 29 25 21 15 25 24 27

Madera 28 24 23 15 23 25 27

Fresno

Fresno-SSP 26 22 21 16 22 26 23

Clovis 23 23 22 18 22 25 29

Fresno-Garland 24 21 21 17 19 25 24

Fresno-Drummond 22 24 23 17 24 20 25

Parlier 21 26 23 19 25 26 31

Tranquillity 36 29 26 23 34 26 36

Huron

Kings

Hanford 23 27 23 16 27 25 24

Corcoran

Tulare

Visalia, Church 20 20 19 18 19 25 22

Porterville 25 21 23 19 21 25 32

Ash Mountain-SNP 23 28 23 18 22 24 33

Lower Kaweah-SNP

Kern

Shafter 17 27 28 22 21 29 33

Oildale 19 26 23 18 18 26 32

Bakersfield-Calif 17 26 23 17 19 26 26

Bakersfield-Muni 16 23 20 14 15 23 21

Edison 19 20 23 17 18 30 21

Arvin-DiGiorgio 26 28 22 19 25 33 29

Maricopa 28 34 30 22 27 33 37

Lebec

District Maximum 36
34
30
29
35
35
37

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24- 2
Federal 1-Hr 0

O3-1hr (ppb) 121
PM10 State 24-hr 207
State 1-Hr Ozone 41

O3-8hr (ppb) 90
PM2.5 Federal 2006 24-hr 23
Federal 2008 8-Hr 73

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

PM 2.5 (µg/m³) 103
State 1997 8-Hr Ozone 112
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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Friday, December 14, 2018 Page 1 of 1