| PM25 24 Hour Average (µg/m3) |
| The information in this report is based on preliminary data and is subject to change. |
| 04/21 | 04/22 | 04/23 | 04/24 | 04/25 | 04/26 | 04/27 |
| San Joaquin |
| Stockton-University | 7.8 | 9.7 | 8.2 | 7.8 | 6.3 | 3.2 | 4.0 |
| Manteca | 5.5 | 7.8 | 7.1 | 6.9 | 3.9 | 2.3 | 3.3 |
| Tracy-Airport | 5.4 | 7.3 | 6.6 | 6.0 | 4.5 | 2.7 | 3.4 |
| Stanislaus |
| Modesto-14th | 6.8 | 9.2 | 9.2 | 8.7 | 4.6 | 3.0 | 4.0 |
| Turlock | 7.4 | 9.4 | 7.4 | 9.5 | 5.8 | 4.6 | 5.1 |
| Merced |
| Merced-M St. | 5.1 | 5.8 | 5.2 | 5.3 | 3.3 | 1.0 | 1.6 |
| Merced-Vierra | 5.2 | 5.2 | 5.9 | 8.1 | 3.0 | 3.2 | 2.7 |
| Madera |
| Madera-City | 8.4 | 7.0 | 8.0 | 8.9 | 3.8 | 2.6 | 3.8 |
| Madera |
| Fresno |
| Fresno-SSP |
| Clovis | 10.6 | 15.1 | 11.0 | 9.6 | 6.1 | 2.9 | 3.4 |
| Fresno-Garland | 9.1 | 11.5 | 8.9 | 8.0 | 5.1 | 2.9 | 4.0 |
| Fresno-Foundry | 9.2 | 15.3 | 11.3 | 10.7 | 6.0 | 4.4 | 4.6 |
| Fresno-Pacific | 8.7 | 17.1 | 10.3 | 10.0 | 4.9 | 3.8 | 3.1 |
| Fresno-Drummond |
| Parlier |
| Tranquillity | 5.1 | 6.5 | 7.9 | 8.0 | 5.2 | 3.8 | 3.7 |
| Huron | 4.8 | 5.6 | 5.9 | 6.7 | 3.8 | 4.5 |
| Kings |
| Hanford | 8.3 | 10.6 | 7.7 | 10.5 | 5.7 | 4.0 | 5.3 |
| Corcoran | 6.3 | 10.7 | 5.0 | 9.1 | 5.3 | 2.0 | 4.5 |
| Tulare |
| Visalia-Ashland | 7.6 | 15.9 | 5.1 | 8.7 | 5.2 | 2.7 | 4.0 |
| Porterville | 17.1 | 17.4 | 6.7 | 10.3 | 8.5 | 4.9 | 6.0 |
| Ash Mountain-SNP | 13.6 | 12.3 | 10.1 | 6.7 | 8.5 | 4.2 | 4.0 |
| Lower Kaweah-SNP |
| Kern |
| Shafter |
| Oildale |
| Bakersfield-Gold | 11.8 | 11.8 | 6.0 | 8.2 | 5.3 | 3.6 | 5.8 |
| Bakersfield-Calif | 9.4 | 10.8 | 4.5 | 6.6 | 4.1 | 2.5 | 2.7 |
| Bakersfield-Muni |
| Edison |
| Arvin-DiGiorgio |
| Maricopa |
| Lebec | 10.3 | 7.2 | 6.2 | 7.5 | 6.6 | 3.9 | 3.3 |
| District Maximum | 17.1 | | 17.4 | | 11.3 | | 10.7 | | 8.5 | | 4.9 | | 6.0 |
| Maximum Measured | Unofficial Days Over the Federal and State Standards¹ |
| Value for This Year |
| Pollutant | Maximum | Federal 2015 8-Hr Ozone | 1 | | Federal 1997 24-hr PM2.5 | 0 |
| Federal 2008 8-Hr Ozone | 0 | | Federal 24-hr PM10 | 0 |
| O3-1hr (ppb) | 82 | | Federal 1997 8-Hr Ozone | 0 | | State 1-Hr Ozone | 0 |
| O3-8hr (ppb) | 71 | | Federal 1-Hr Ozone | 0 | | State 1997 8-Hr Ozone | 1 |
| PM 10 (µg/m³) | 72 | | Federal 2006 24-hr PM2.5 | 0 | | State 24-hr PM10 | 6 |
| PM 2.5 (µg/m³) | 32.2 |
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. |
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Sunday, April 28, 2024 | Page 1 of 1 |