| | PM25 24 Hour Average (µg/m3) |
| | The information in this report is based on preliminary data and is subject to change. |
| | 04/12 | 04/13 | 04/14 | 04/15 | 04/16 | 04/17 | 04/18 |
| | San Joaquin |
| | Stockton-University | 8.1 | 4.6 | 3.4 | 4.2 | 9.1 | 11.0 | 9.9 |
| | Manteca | 6.1 | 2.3 | 2.6 | 3.3 | 6.6 | 9.7 | 9.0 |
| | Tracy-Airport | 4.4 | 1.5 | 1.2 | 2.2 | 4.1 | 5.5 | 6.4 |
| | Stanislaus |
| | Modesto-14th | 8.7 | 3.9 | 3.3 | 4.6 | 7.1 | 10.9 | 10.0 |
| | Turlock | 8.3 | 4.0 | 3.4 | 4.5 | 8.5 | 11.2 | 10.4 |
| | Merced |
| | Merced-M St. | 5.8 | 1.4 | 1.0 | 3.5 | 6.0 | 7.2 | 7.0 |
| | Merced-Vierra | 5.2 | 5.0 | 1.4 | 4.4 | 6.6 | 5.1 | 5.2 |
| | Madera |
| | Madera-City | 8.6 | 3.6 | 2.7 | 4.2 | 7.9 | 9.8 | 8.3 |
| | Madera |
| | Fresno |
| | Fresno-SSP |
| | Clovis | 10.1 | 5.4 | 2.6 | 4.2 | 6.7 | 10.5 | 11.9 |
| | Fresno-Garland | 10.8 | 4.4 | 2.0 | 3.0 | 6.5 | 11.6 | 11.1 |
| | Fresno-Foundry | 17.4 | 5.4 | 4.2 | 6.8 | 10.0 | 18.3 | 15.9 |
| | Fresno-Pacific | 13.9 | 4.9 | 4.5 | 4.8 | 8.0 | 15.8 | 14.3 |
| | Fresno-Drummond |
| | Parlier |
| | Tranquillity | 6.5 | 5.5 | 4.0 | 4.0 | 5.5 | 6.0 | 8.7 |
| | Huron | 8.2 | 6.4 | 3.4 | 5.4 | 7.4 | 8.0 | 9.4 |
| | Kings |
| | Hanford | 16.0 | 7.1 | 5.5 | 7.1 | 9.6 | 19.8 | 27.3 |
| | Corcoran | 12.4 | 5.4 | 2.8 | 5.2 | 10.3 | 16.3 | 25.3 |
| | Tulare |
| | Visalia-Ashland | 12.9 | 5.0 | 2.0 | 6.9 | 10.0 | 19.6 | 19.2 |
| | Porterville | 13.7 | 6.1 | 3.2 | 11.0 | 14.5 | 25.2 | 23.8 |
| | Ash Mountain-SNP | 7.5 | 5.0 | 2.1 | 2.0 | 6.8 | 11.8 | 11.2 |
| | Lower Kaweah-SNP |
| | Kern |
| | Shafter |
| | Oildale |
| | Bakersfield-Gold | 14.1 | 17.8 | 17.6 |
| | Bakersfield-Calif | 12.0 | 5.0 | 1.6 | 6.2 | 9.2 | 16.0 | 13.7 |
| | Bakersfield-Muni |
| | Edison |
| | Arvin-DiGiorgio |
| | Maricopa |
| | Lebec | 6.5 | 3.2 | 2.2 | 3.2 | 7.5 | 11.3 | 6.5 |
| | District Maximum | 17.4 | | 7.1 | | 5.5 | | 11.0 | | 14.5 | | 25.2 | | 27.3 |
| | 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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| Friday, April 19, 2024 | Page 1 of 1 |