Daily Report

PM10 24 Hour Average (µg/m³)

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

09/12 09/13 09/14 09/15 09/16 09/17 09/18

San Joaquin

Stockton-University 47 16 27 43 43 29 33

Manteca 77 16 35 40 34 23 28

Tracy-Airport 32 9 19 26 38 19 23

Stanislaus

Modesto-14th 37 16 40 46 39 27 31

Turlock 42 22 50 53 57 36 41

Merced

Merced-M St. 60 28 50 49 49 48 57

Merced-Vierra

Madera

Madera-City 74 32 71 87 78 52 68

Madera

Fresno

Fresno-SSP

Clovis 69 26 49 69 68 45 49

Fresno-Garland 67 28 52 63 66 44 53

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 86 35 73 91 87 52 61

Parlier

Tranquillity

Huron

Kings

Hanford 94 42 76 99 88 74 64

Corcoran 110 47 79 88 78 78 72

Tulare

Visalia-Ashland 80 49 69 84 87 70 63

Porterville

Ash Mountain-SNP

Kern

Shafter

Oildale 47 66 51 65 47 66 65

Bakersfield-Gold 55 69 56 72 58 76 77

Bakersfield-Calif 47 61 55 62 48 58 60

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 110 69 79 99 88 78 77
Maximum Measured
Value for This Year
 
PollutantMaximum
O3-1hr (ppb)101
O3-8hr (ppb)84
PM 10 (µg/m³)150
PM 2.5 (µg/m³)49.5
Unofficial Days Over the Federal and State Standards¹
 
Federal 2015 8-Hr Ozone 45
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 22
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 10
  Federal 1-Hr Ozone 0
State 2005 8-Hr Ozone 45
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 108
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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Saturday, September 19, 2026 Page 1 of 1