Carbon Monoxide Eight-Hour Max (PPM)

The information in this report is based on preliminary data and is subject to change.

09/10 09/11 09/12 09/13 09/14 09/15 09/16

San Joaquin

Stockton-Hazelton 0 0

Manteca

Tracy-Airport

Stanislaus

Modesto-14th 0 0 0 0 0 0 0

Turlock

Merced

Merced-M St.

Merced-Coffee

Madera

Madera-City

Madera

Fresno

Fresno-SSP

Clovis 0 0 0 0 0 0 0

Fresno-Garland 0 0 0 0 0 0 0

Fresno-Foundry 1 0 0 1 1 0 1

Fresno-Pacific

Fresno-Drummond

Parlier

Tranquillity

Huron

Kings

Hanford

Corcoran

Tulare

Visalia, Church

Porterville

Ash Mountain-SNP

Lower Kaweah-SNP

Kern

Shafter

Oildale

Bakersfield-Gold

Bakersfield-Calif

Bakersfield-Muni 0 0 0 0 0 0 0

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 1
0
0
1
1
0
1

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum Federal 2015 8-Hr Ozone 93
Federal 1997 24-hr PM2.5 0

Federal 2008 8-Hr Ozone 70
Federal 24-hr PM10 0

O3-1hr (ppb) 116
Federal 1997 8-Hr Ozone 16
State 1-Hr Ozone 36

O3-8hr (ppb) 100
Federal 1-Hr Ozone 0
State 1997 8-Hr Ozone 93

PM 10 (µg/m³) 149
Federal 2006 24-hr PM2.5 15
State 24-hr PM10 148

PM 2.5 (µg/m³) 63.5
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, September 17, 2021 Page 1 of 1