| | Carbon Monoxide Eight-Hour Max (PPM) |
| | The information in this report is based on preliminary data and is subject to change. |
| | 09/14 | 09/15 | 09/16 | 09/17 | 09/18 | 09/19 | 09/20 |
| | San Joaquin |
| | Stockton-University | 0 | 0 | 0 | 0 | 0 | 0 |
| | Manteca |
| | Tracy-Airport |
| | Stanislaus |
| | Modesto-14th | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | Turlock |
| | Merced |
| | Merced-M St. |
| | Merced-Coffee |
| | Madera |
| | Madera-City |
| | Madera |
| | Fresno |
| | Fresno-SSP |
| | Clovis | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | Fresno-Garland | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | 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 |
| | Lower Kaweah-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 |
| | Maximum Measured | Unofficial Days Over the Federal and State Standards¹ |
| | Value for This Year |
| | Pollutant | Maximum | Federal 2015 8-Hr Ozone | 57 | | Federal 1997 24-hr PM2.5 | 0 |
| | Federal 2008 8-Hr Ozone | 35 | | Federal 24-hr PM10 | 0 |
| | O3-1hr (ppb) | 109 | | Federal 1997 8-Hr Ozone | 9 | | State 1-Hr Ozone | 15 |
| | O3-8hr (ppb) | 93 | | Federal 1-Hr Ozone | 0 | | State 1997 8-Hr Ozone | 57 |
| | PM 10 (µg/m³) | 144 | | Federal 2006 24-hr PM2.5 | 3 | | State 24-hr PM10 | 108 |
| | PM 2.5 (µg/m³) | 40.6 |
| ¹Data affected by smoke, high winds, fireworks, and 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.healthyairliving.com and become a part of the solution! |
| Thursday, September 21, 2023 | Page 1 of 1 |