Daily Report

PM10 24 Hour Average (µg/m³)

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

08/26 08/27 08/28 08/29 08/30 08/31 09/01

San Joaquin

Stockton-University 22 40 36 27 17 36 21

Manteca 31 48 40 21 20 30 23

Tracy-Airport 36 47 17 3 2

Stanislaus

Modesto-14th 29 58 48 23 19 33 26

Turlock 41 104 65 31 27 47 31

Merced

Merced-M St. 62 113 65 39 31 70 39

Merced-Vierra

Madera

Madera-City 68 145 103 44 36 74 51

Madera

Fresno

Fresno-SSP

Clovis 57 116 116 43 31 69 48

Fresno-Garland 47 108 105 45 30 60 50

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond 68 150 128 58 32 80 62

Parlier

Tranquillity

Huron

Kings

Hanford 95 129 130 65 35 73 74

Corcoran 72 76 95 38 39 38 67

Tulare

Visalia-Ashland 94 133 109 63 41 75 70

Porterville

Ash Mountain-SNP

Kern

Shafter

Oildale 70 90 87 60 37 43 42

Bakersfield-Gold 78 96 93 68 43 54 51

Bakersfield-Calif 59 81 89 52 37 44

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum 95 150 130 68 43 80 74
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 43
Federal 1997 24-Hr PM2.5 0
  Federal 2008 8-Hr Ozone 21
Federal 24-Hr PM10 0
  Federal 1997 8-Hr Ozone 0
State 1-Hr Ozone 8
  Federal 1-Hr Ozone 0
State 2005 8-Hr Ozone 43
  Federal 2006 24-Hr PM2.5 14
State 24-Hr PM10 92
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.
Make one change for clean air! Visit www.valleyair.org/hal and become a part of the solution!
Wednesday, September 2, 2026 Page 1 of 1