Sacramento Air Quality in 2024
In 2024, Sacramento's air quality (Sacramento--Roseville--Arden-Arcade, CA area) had a median daily AQI of 55 (Moderate) across 366 monitored days. 35 days (9.6%) reached Unhealthy for Sensitive Groups or worse, 125 were Good, and the year's peak AQI was 140 (Unhealthy for Sensitive Groups). Ground-level ozone set the daily AQI on 221 of those days. The cleanest month of 2024 was February (median AQI 44, 0 days above 100) and the worst was July (median 93, 12 days above 100, peak 140).
- Good: 34.2%
- Moderate: 56.3%
- Unhealthy for Sensitive Groups: 9.6%
- Unhealthy or worse: 0.0%
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How was Sacramento's air quality in 2024?
Moderate on a typical day: median AQI 55, with 35 days above AQI 100 out of 366 monitored — the 4th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 140 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 221 days.
- ✓Cleanest month: February; worst: July.
Frequently asked questions
What was the average AQI in Sacramento in 2024?▾
EPA's Air Quality System puts Sacramento's (Sacramento--Roseville--Arden-Arcade, CA) median daily AQI for 2024 at 55, which is Moderate. 35 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 140.
Which month had the worst air quality in Sacramento in 2024?▾
The cleanest month of 2024 was February (median AQI 44, 0 days above 100) and the worst was July (median 93, 12 days above 100, peak 140).
Was 2024 a good or bad year for Sacramento's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 4th cleanest by days above AQI 100. 2024's median of 55 is below the area's typical annual median of 58.
Sacramento month by month in 2024
Sacramento air quality month by month, 2024 (Sacramento--Roseville--Arden-Arcade, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 51 | 0 | 73 | PM2.5 |
| Februarycleanest | 29 | 44 | 0 | 76 | PM2.5 |
| March | 31 | 44 | 0 | 61 | O3 |
| April | 30 | 50 | 0 | 90 | O3 |
| May | 31 | 51 | 0 | 100 | O3 |
| June | 30 | 77 | 8 | 140 | O3 |
| Julyworst | 31 | 93 | 12 | 140 | O3 |
| August | 31 | 80 | 9 | 126 | O3 |
| September | 30 | 61 | 4 | 133 | O3 |
| October | 31 | 55 | 1 | 101 | PM2.5 |
| November | 30 | 54 | 0 | 90 | PM2.5 |
| December | 31 | 61 | 1 | 118 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 4th cleanest by days above AQI 100.
2024's median of 55 is below the area's typical annual median of 58.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Sacramento
The latest EPA AirNow observation puts Sacramento's AQI at 43 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Sacramento air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Sacramento--Roseville--Arden-Arcade, CA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.