Daily Report

PM10 24 Hour Average (µg/m³)

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

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

San Joaquin

Stockton-University 21 20 17 18 32 28 20

Manteca 28 29 23 19 40 36 32

Tracy-Airport 37 33 29 20 47 42 35

Stanislaus

Modesto-14th 28 29 25 19 38 41 36

Turlock 37 37 34 29 48 54 51

Merced

Merced-M St. 59 46 47 36 48 64 59

Merced-Vierra

Madera

Madera-City 75 53 52 52 85 80 74

Madera

Fresno

Fresno-SSP

Clovis 70 52 54 41 61 77 73

Fresno-Garland 63 49 50 37 54 72 66

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 83 58 64 46 84 116 99

Parlier

Tranquillity

Huron

Kings

Hanford 77 75 58 45 76 74 71

Corcoran 50 49 51 43 46 48 50

Tulare

Visalia-Ashland 82 73 70 54 73 74

Porterville

Ash Mountain-SNP

Kern

Shafter

Oildale 61 62 44 35 43 38 46

Bakersfield-Gold 67 75 57 46 54 53 58

Bakersfield-Calif 70 63 46 42 51 39 51

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 83 75 70 54 85 116 99
Maximum Measured
Value for This Year
 
PollutantMaximum
O3-1hr (ppb)98
O3-8hr (ppb)84
PM 10 (µg/m³)116
PM 2.5 (µg/m³)49.5
Unofficial Days Over the Federal and State Standards¹
 
Federal 2015 8-Hr Ozone 35
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 16
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 5
  Federal 1-Hr Ozone 0
State 1997 8-Hr Ozone 0
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 74
¹Data affected by smoke, high winds, fireworks, 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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Thursday, August 13, 2026 Page 1 of 1