| | PM2.5 24 Hour Average (µg/m³) |
| | The information in this report is based on preliminary data and is subject to change. |
| | 08/27 | 08/28 | 08/29 | 08/30 | 08/31 | 09/01 | 09/02 |
| | San Joaquin |
| | Stockton-University | 7.4x | 5.5 | 6.2 | 7.1 | 6.8 | 5.0 | 4.1 |
| | Manteca | 6.6x | 6.3 | 5.8 | 8.6 | 8.2 | 6.3 | 5.7 |
| | Tracy-Airport | 4.0x | 1.6 | 1.0 | 4.1 |
| | Stanislaus |
| | Modesto-14th | 6.0x | 5.1 | 2.3 | 5.0 | 4.8 | 4.9 | 2.6 |
| | Turlock | 10.4x | 8.9x | 5.7 | 7.9 | 9.8 | 7.2 | 5.0 |
| | Merced |
| | Merced-M St. | 14.1x | 10.6x | 5.3x | 6.8x | 14.2x | 8.1 | 6.3 |
| | Merced-Vierra | 17.9x | 13.3x | 9.4x | 9.0x | 16.4x | 8.6 | 8.1 |
| | Madera |
| | Madera-City | 20.0x | 18.7x | 9.8x | 8.0x | 13.7x | 10.1x | 7.4x |
| | Madera |
| | Fresno |
| | Fresno-SSP |
| | Clovis | 19.8x | 20.1x | 9.8x | 8.7x | 18.5x | 10.4x | 8.4x |
| | Fresno-Garland | 19.7x | 22.0x | 12.8x | 11.1x | 14.9x | 10.9x | 8.1x |
| | Fresno-Foundry | 18.9x | 20.5x | 11.1x | 8.3x | 13.0x | 10.3x | 8.8x |
| | Fresno-Pacific | 16.0x | 17.9x | 9.3x | 12.0x | 13.6x | 9.9x | 6.6x |
| | Fresno-Drummond |
| | Parlier |
| | Tranquillity | 9.1x | 13.9x | 10.2x | 7.9x | 12.9x | 8.0x | 3.2x |
| | Huron | 10.1x | 13.7x | 7.1x | 6.3x | 15.1x | 16.9x | 7.2x |
| | Kings |
| | Hanford | 16.0x | 21.6x | 13.7x | 8.2x | 14.5x | 14.7x | 10.6x |
| | Corcoran | 17.9x | 23.5x | 12.1x | 11.9x | 13.1x | 11.9x | 9.4x |
| | Tulare |
| | Visalia-Ashland | 15.2x | 19.2x | 14.1x | 7.8x | 15.5x | 11.5x | 10.5x |
| | Porterville | 13.1x | 12.8x | 11.7x | 6.0x | 10.0x | 10.2x | 8.4x |
| | Ash Mountain-SNP | 7.3x | 8.4x | 11.9x | 12.0x | 10.2x | 9.4x | 9.0x |
| | Kern |
| | Shafter |
| | Oildale |
| | Bakersfield-Gold | 12.7x | 14.0x | 11.3x | 9.3x | 8.4x | 10.4x | 11.7x |
| | Bakersfield-Calif | 15.6x | 13.6x | 13.6x | 11.0x | 11.0x |
| | Bakersfield-Muni |
| | Edison |
| | Arvin-DiGiorgio |
| | Maricopa |
| | Lebec | 6.8x | 6.5x | 11.5x | 5.3x | 4.9 | 7.2x |
| | District Maximum | 20.0 | 23.5 | 14.1 | 12.0 | 18.5 | 16.9 | 11.7 |
|
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| 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! |
| Thursday, September 3, 2026 | Page 1 of 1 |