Sacramento Air Quality in 2023
In 2023, Sacramento's air quality (Sacramento--Roseville--Arden-Arcade, CA area) had a median daily AQI of 58 (Moderate) across 365 monitored days. 14 days (3.8%) 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 221 of those days. The cleanest month of 2023 was January (median AQI 43, 0 days above 100) and the worst was July (median 80, 7 days above 100, peak 143).
- Good: 35.3%
- Moderate: 60.8%
- Unhealthy for Sensitive Groups: 3.8%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Sacramento
Today's main pollutant in Sacramento is ground-level ozone (AQI 29). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How was Sacramento's air quality in 2023?
Moderate on a typical day: median AQI 58, with 14 days above AQI 100 out of 365 monitored — the 2nd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 143 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 221 days.
- ✓Cleanest month: January; worst: July.
Frequently asked questions
What was the average AQI in Sacramento in 2023?▾
EPA's Air Quality System puts Sacramento's (Sacramento--Roseville--Arden-Arcade, CA) median daily AQI for 2023 at 58, which is Moderate. 14 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 2023?▾
The cleanest month of 2023 was January (median AQI 43, 0 days above 100) and the worst was July (median 80, 7 days above 100, peak 143).
Was 2023 a good or bad year for Sacramento's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 2nd cleanest by days above AQI 100. 2023's median of 58 is in line with the area's typical annual median of 58.
Sacramento month by month in 2023
Sacramento air quality month by month, 2023 (Sacramento--Roseville--Arden-Arcade, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januarycleanest | 31 | 43 | 0 | 91 | PM2.5 |
| February | 28 | 58 | 0 | 89 | PM2.5 |
| March | 31 | 48 | 0 | 60 | O3 |
| April | 30 | 54 | 1 | 101 | O3 |
| May | 31 | 52 | 1 | 112 | O3 |
| June | 30 | 61 | 1 | 136 | O3 |
| Julyworst | 31 | 80 | 7 | 143 | O3 |
| August | 31 | 74 | 3 | 122 | O3 |
| September | 30 | 61 | 1 | 107 | O3 |
| October | 31 | 53 | 0 | 97 | O3 |
| November | 30 | 62 | 0 | 93 | PM2.5 |
| December | 31 | 61 | 0 | 94 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 2nd cleanest by days above AQI 100.
2023's median of 58 is in line with 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 29 (O3). 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.