| | Carbon Monoxide Eight-Hour Max (PPM) |
| | The information in this report is based on preliminary data and is subject to change. |
| | 07/10 | 07/11 | 07/12 | 07/13 | 07/14 | 07/15 | 07/16 |
| | San Joaquin |
| | Stockton-University |
| | Manteca |
| | Tracy-Airport |
| | Stanislaus |
| | Modesto-14th |
| | Turlock |
| | Merced |
| | Merced-M St. |
| | Merced-Vierra |
| | Madera |
| | Madera-City |
| | Madera |
| | Fresno |
| | Fresno-SSP |
| | Clovis | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | Fresno-Garland | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| | Fresno-Foundry | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | Fresno-Pacific |
| | Fresno-Drummond |
| | Parlier |
| | Tranquillity |
| | Huron |
| | Kings |
| | Hanford |
| | Corcoran |
| | Tulare |
| | Visalia-Ashland |
| | Porterville |
| | Ash Mountain-SNP |
| | Kern |
| | Shafter |
| | Oildale |
| | Bakersfield-Gold |
| | Bakersfield-Calif |
| | Bakersfield-Muni | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | Edison |
| | Arvin-DiGiorgio |
| | Maricopa |
| | Lebec |
| | District Maximum | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
|
| 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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| Friday, July 17, 2026 | Page 1 of 1 |