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.

03/06 03/07 03/08 03/09 03/10 03/11 03/12

San Joaquin

Stockton-Hazelton

Tracy-Airport 6
14
11
9
8
11
12

Stanislaus

Modesto-14th

Turlock

Merced

Merced-Coffee

Madera

Madera

Fresno

Clovis

Fresno-Drummond

Fresno-First 21
27
14
10
15
24
23

Fresno-SSP

Parlier

Kings

Corcoran 11
18
19
19

Hanford

Tulare

Ash Mountain-SNP

Lower Kaweah-SNP

Visalia, Church

Kern

Arvin

Bakersfield-Calif

Edison

Maricopa

Oildale

Shafter

District Maximum 21
27
14
11
18
24
23

Maximum Measured Value for Unofficial Days Over the Federal and State Standards¹

This Year

Pollutant Maximum

PM10 Federal 24-hr 0
Federal 1-Hr Ozone 0

O3-1hr (ppb) 56
PM10 State 24-hr 4
State 1-Hr Ozone 0

O3-8hr (ppb) 50
PM2.5 Federal 2006 24-hr 16
Federal 2008 8-Hr Ozone 0

PM 10 (µg/m³) 63
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 62
State 1997 8-Hr Ozone 0
¹Some of the days over the standards shown above may be the result of “Natural Events” such as extreme wind episodes, or
“Exceptional Events” such as wildfires and would not count as violations of the federal standard.
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Saturday, March 13, 2010 Page 1 of 1