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.

12/08 12/09 12/10 12/11 12/12 12/13 12/14

San Joaquin

Stockton-Hazelton 10 16 15 8 20 18 8

Manteca

Tracy-Airport 21 19 26 33 32 18 15

Stanislaus

Modesto-14th 10 19 17 21 22 19 11

Turlock 13 21 17 20 20 20 11

Merced

Merced-Coffee 15 21 16 21 18 21 12

Madera

Madera-City 19 20 14 20 21 21 14

Madera 19 20 15 19 22 23 7

Fresno

Fresno-SSP 17 18 15 18 23 18 12

Clovis 17 21 16 20 21 23 8

Fresno-Garland 16 19 16 14 20 19 8

Fresno-Drummond 15 21 14 18 16 16 9

Parlier 19 22 17 21 22 24 14

Tranquillity 21 25 22 29 21 28 12

Huron

Kings

Hanford 17 22 14 20 20 18 5

Corcoran

Tulare

Visalia, Church 13 17 17 14 19 18 10

Porterville 20 20 18 20 21 25 15

Ash Mountain-SNP 22 21 17 18 21 33 32

Lower Kaweah-SNP

Kern

Shafter 22 26 20 19 24 26 9

Oildale 22 20 17 15 23 24 20

Bakersfield-Calif 18 22 15 16 20 16 20

Bakersfield-Muni 15 19 11 13 16 16 18

Edison 17 19 14 15 24 35 37

Arvin-DiGiorgio 21 20 16 20 25 24 20

Maricopa 28 27 20 25 29 31 29

Lebec

District Maximum 28
27
26
33
32
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 208
State 1-Hr Ozone 41

O3-8hr (ppb) 90
PM2.5 Federal 2006 24-hr 24
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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Saturday, December 15, 2018 Page 1 of 1