Sacramento Air Quality in 2025
In 2025, Sacramento's air quality (Sacramento--Roseville--Arden-Arcade, CA area) had a median daily AQI of 55 (Moderate) across 365 monitored days. 5 days (1.4%) reached Unhealthy for Sensitive Groups or worse, 129 were Good, and the year's peak AQI was 143 (Unhealthy for Sensitive Groups). Ground-level ozone set the daily AQI on 187 of those days. The cleanest month of 2025 was March (median AQI 47, 0 days above 100) and the worst was July (median 58, 2 days above 100, peak 143).
- Good: 35.3%
- Moderate: 63.3%
- Unhealthy for Sensitive Groups: 1.4%
- Unhealthy or worse: 0.0%
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How was Sacramento's air quality in 2025?
Moderate on a typical day: median AQI 55, with 5 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 143 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 187 days.
- ✓Cleanest month: March; worst: July.
Frequently asked questions
What was the average AQI in Sacramento in 2025?▾
EPA's Air Quality System puts Sacramento's (Sacramento--Roseville--Arden-Arcade, CA) median daily AQI for 2025 at 55, which is Moderate. 5 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 143.
Which month had the worst air quality in Sacramento in 2025?▾
The cleanest month of 2025 was March (median AQI 47, 0 days above 100) and the worst was July (median 58, 2 days above 100, peak 143).
Was 2025 a good or bad year for Sacramento's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2025's median of 55 is below the area's typical annual median of 58.
Sacramento month by month in 2025
Sacramento air quality month by month, 2025 (Sacramento--Roseville--Arden-Arcade, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 66 | 0 | 84 | PM2.5 |
| February | 28 | 48 | 0 | 77 | PM2.5 |
| Marchcleanest | 31 | 47 | 0 | 63 | O3 |
| April | 30 | 50 | 0 | 71 | O3 |
| May | 31 | 58 | 0 | 93 | O3 |
| June | 30 | 67 | 1 | 122 | O3 |
| Julyworst | 31 | 58 | 2 | 143 | O3 |
| August | 31 | 61 | 1 | 108 | O3 |
| September | 30 | 54 | 1 | 119 | O3 |
| October | 31 | 48 | 0 | 66 | PM2.5 |
| November | 30 | 57 | 0 | 71 | PM2.5 |
| December | 31 | 60 | 0 | 83 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2025'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.