PM10 24 Hour Average (µg/m3)

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

Manteca 31 34 32 44 29 35 38

Tracy-Airport 10 15 9 12 8 14 17

Stanislaus

Modesto-14th 31 33 24 35 31 26 39

Turlock

Merced

Merced-Coffee

Madera

Madera-City 29 28 28 32 27 29 42

Madera

Fresno

Fresno-SSP

Clovis 32 28 30 26 25 24 35

Fresno-Garland 29 30 27 23 29 24 37

Fresno-Drummond

Parlier

Tranquillity

Huron

Kings

Hanford 32 32 28 31 39 44 57

Corcoran 35 34 27 28 37 39 56

Tulare

Visalia, Church 32 27 29 30 30 36 42

Porterville

Ash Mountain-SNP

Lower Kaweah-SNP

Kern

Shafter

Oildale 28 21 31 37 29 26 44

Bakersfield-Calif

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 35
34
32
44
39
44
57

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