Daily Report

PM10 24 Hour Average (µg/m³)

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

10/22 10/23 10/24 10/25 10/26 10/27 10/28

San Joaquin

Stockton-University 17 13 21 24 22 21 24

Manteca 18 14 18 26 18 15 21

Tracy-Airport 18 12 11 13 15 13 12

Stanislaus

Modesto-14th 19 10 20 24 15 16 19

Turlock 18 11 17 26 19 15 25

Merced

Merced-M St. 18 16 19 27 26 17 31

Merced-Vierra

Madera

Madera-City 11 15 15 20 23 18 34

Madera

Fresno

Fresno-SSP

Clovis 10 10 19 23 26 16 32

Fresno-Garland 10 13 23 35 26 14 32

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 13 23 44

Parlier

Tranquillity

Huron

Kings

Hanford 9 13 23 41 36 20 32

Corcoran 10 12 27 48 41 26 38

Tulare

Visalia-Ashland 10 17 28 33 33 30 35

Porterville

Ash Mountain-SNP

Kern

Shafter

Oildale 5 11 21 20 33 33 39

Bakersfield-Gold 9 15 29 27 42 40

Bakersfield-Calif 9 17 26 25 38 40 40

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 19 17 29 48 42 40 44
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 53
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 29
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 15
  Federal 1-Hr Ozone 0
State 2005 8-Hr Ozone 53
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 141
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, October 29, 2026 Page 1 of 1