Air Quality This Year
Number of Days in Each AQI Category
AQI numbers calculated according to the latest federal ozone health standard of .070 parts per million averaged over 8 hours.For pre-2008 values based on the prior National Ambient Air Quality Standard, click the link at the bottom of the page.
Region | Yolo-Solano | Sacramento | Placer | El Dorado | |
---|---|---|---|---|---|
Maximum AQI |
143
OzoneTue. 7/11 |
101
OzoneFri. 7/21 |
133
OzoneThu. 7/20 |
143
OzoneTue. 7/11 |
115
OzoneThu. 8/31 |
Hazardous | 0 | 0 | 0 | 0 | 0 |
VeryUnhealthy | 0 | 0 | 0 | 0 | 0 |
Unhealthy | 0 | 0 | 0 | 0 | 0 |
UnhealthySG | 11 | 1 | 9 | 8 | 5 |
Moderate | 83 | 24 | 56 | 81 | 71 |
Good | 82 | 148 | 111 | 87 | 94 |
Preliminary data, subject to revision or deletion.