| AQI by Site |
| AQI is determined using real-time data measured at each site. AQI is based on the pollutant that measured highest. |
| Factors such as site capabilities, seasonality, wildfire or wind events, and/or technical difficulties influence which |
| pollutant is used to determine AQI. The data in this report is preliminary and subject to change. |
| 11/25 | | 11/26 | | 11/27 | | 11/28 | | 11/29 | | 11/30 | | 12/01 |
| San Joaquin |
| Stockton-University | 54 (PM25) | 74 (PM25) | 84 (PM25) | 99 (PM25) | 73 (PM25) | 54 (PM25) | 39 (PM25) |
| Manteca | 28 (PM25) | 48 (PM25) | 66 (PM25) | 81 (PM25) | 59 (PM25) | 36 (PM25) | 14 (PM25) |
| Tracy-Airport | 26 (O3-8) | 26 (O3-8) | 31 (PM25) | 49 (PM25) | 31 (PM25) | 31 (O3-8) | 32 (O3-8) |
| Stanislaus |
| Modesto-14th | 26 (O3-8) | 69 (PM25) | 75 (PM25) | 93 (PM25) | 71 (PM25) | 48 (PM25) | 29 (PM25) |
| Turlock | 50 (PM25) | 70 (PM25) | 72 (PM25) | 65 (PM25) | 69 (PM25) | 51 (PM25) | 38 (PM25) |
| Merced |
| Merced-M St. | 64 (PM25) | 79 (PM25) | 61 (PM25) | 58 (PM25) | 60 (PM25) | 55 (PM25) | 28 (PM25) |
| Merced-Coffee | 52 (PM25) | 59 (PM25) | 52 (PM25) | 40 (PM25) | 54 (PM25) | 48 (PM25) | 33 (PM25) |
| Madera |
| Madera-City | 67 (PM25) | 60 (PM25) | 48 (PM25) | 31 (O3-8) | 44 (PM25) | 52 (PM25) | 39 (PM25) |
| Madera | 30 (O3-8) | 27 (O3-8) | 31 (O3-8) | 32 (O3-8) | 30 (O3-8) | 34 (O3-8) | 32 (O3-8) |
| Fresno |
| Fresno-SSP | 28 (O3-8) | 30 (O3-8) | 30 (O3-8) | 30 (O3-8) | 28 (O3-8) | 33 (O3-8) | 33 (O3-8) |
| Clovis | 72 (PM25) | 62 (PM25) | 43 (PM25) | 44 (PM25) | 37 (PM25) | 43 (PM25) | 39 (PM25) |
| Fresno-Garland | 87 (PM25) | 81 (PM25) | 58 (PM25) | 63 (PM25) | 48 (PM25) | 54 (PM25) | 47 (PM25) |
| Fresno-Foundry | 69 (PM25) | 60 (PM25) | 68 (PM25) | 50 (PM25) |
| Fresno-Pacific | 74 (PM25) | 64 (PM25) | 54 (PM25) | 60 (PM25) | 49 (PM25) |
| Fresno-Drummond | 52 (PM10) | 49 (PM10) | 60 (PM10) | 58 (PM10) | 42 (PM10) | 43 (PM10) | 32 (PM10) |
| Parlier | 30 (O3-8) | 31 (O3-8) | 27 (O3-8) | 31 (O3-8) | 32 (O3-8) | 29 (O3-8) | 32 (O3-8) |
| Tranquillity | 27 (O3-8) | 29 (O3-8) | 30 (O3-8) | 32 (O3-8) | 50 (PM25) | 38 (PM25) | 31 (O3-8) |
| Huron | 29 (PM25) | 38 (PM25) | 37 (PM25) | 25 (PM25) | 42 (PM25) | 31 (PM25) | 18 (PM25) |
| Kings |
| Hanford | 58 (PM25) | 72 (PM25) | 69 (PM25) | 64 (PM25) | 56 (PM25) | 69 (PM25) | 32 (O3-8) |
| Corcoran | 54 (PM25) | 64 (PM25) | 71 (PM25) | 52 (PM10) | 51 (PM10) | 67 (PM25) | 37 (PM10) |
| Tulare |
| Visalia-Ashland | 77 (PM25) | 74 (PM25) | 64 (PM25) | 52 (PM25) | 38 (PM25) | 64 (PM25) | 52 (PM25) |
| Porterville | 35 (PM25) | 43 (PM25) | 31 (O3-8) | 31 (O3-8) | 37 (O3-8) | 45 (PM25) | 47 (PM25) |
| Ash Mountain-SNP | 32 (PM25) | 32 (O3-8) | 29 (O3-8) | 34 (O3-8) | 33 (O3-8) | 34 (O3-8) | 31 (O3-8) |
| Lower Kaweah-SNP | 35 (O3-8) | 35 (O3-8) | 37 (O3-8) | 39 (O3-8) | 38 (O3-8) | 36 (O3-8) | 31 (O3-8) |
| Kern |
| Shafter | 30 (O3-8) | 31 (O3-8) | 30 (O3-8) | 31 (O3-8) | 36 (O3-8) | 35 (O3-8) | 35 (O3-8) |
| Oildale | 33 (O3-8) | 34 (O3-8) | 35 (O3-8) | 42 (PM10) | 39 (O3-8) | 49 (PM10) | 36 (O3-8) |
| Bakersfield-Gold | 65 (PM25) | 66 (PM25) | 58 (PM25) | 60 (PM25) | 54 (PM10) | 71 (PM25) | 57 (PM25) |
| Bakersfield-Calif | 55 (PM25) | 62 (PM25) | 54 (PM25) | 57 (PM25) | 39 (PM10) | 63 (PM25) | 42 (PM25) |
| Bakersfield-Muni | 27 (O3-8) | 24 (O3-8) | 23 (O3-8) | 22 (O3-8) | 31 (O3-8) | 28 (O3-8) | 31 (O3-8) |
| Edison | 31 (O3-8) | 30 (O3-8) | 33 (O3-8) | 30 (O3-8) | 37 (O3-8) | 33 (O3-8) | 32 (O3-8) |
| Arvin-DiGiorgio | 33 (O3-8) | 27 (O3-8) | 28 (O3-8) | 31 (O3-8) | 38 (O3-8) |
| Maricopa | 33 (O3-8) | 31 (O3-8) | 32 (O3-8) | 36 (O3-8) | 37 (O3-8) | 35 (O3-8) | 36 (O3-8) |
| Lebec | 18 (PM25) | 9 (PM25) | 4 (PM25) | 15 (PM25) | 21 (PM25) | 43 (PM25) | 30 (PM25) |
| Maximum Measured | Unofficial Days Over the Federal and State Standards¹ |
| Value for This Year |
| Pollutant | Maximum | Federal 2015 8-Hr Ozone | 59 | | Federal 1997 24-hr PM2.5 | 0 |
| O3-1hr (ppb) | 109 | | Federal 2008 8-Hr Ozone | 35 | | Federal 24-hr PM10 | 1 |
| O3-8hr (ppb) | 93 | | Federal 1997 8-Hr Ozone | 9 | | State 1-Hr Ozone | 15 |
| PM 10 (µg/m³) | 157 | | Federal 1-Hr Ozone | 0 | | State 1997 8-Hr Ozone | 59 |
| PM 2.5 (µg/m³) | 40.6 | | Federal 2006 24-hr PM2.5 | 4 | | State 24-hr PM10 | 165 |
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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Saturday, December 2, 2023 | Page 1 of 1 |