Santa Rosa Air Quality in 2022
In 2022, Santa Rosa's air quality (Santa Rosa, CA area) had a median daily AQI of 36 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 286 were Good, and the year's peak AQI was 82 (Moderate). Ground-level ozone set the daily AQI on 194 of those days. The cleanest month of 2022 was July (median AQI 21, 0 days above 100) and the worst was January (median 54, 0 days above 100, peak 65).
- Good: 78.4%
- Moderate: 21.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Santa Rosa
Today's main pollutant in Santa Rosa is ground-level ozone (AQI 15). 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 Santa Rosa's air quality in 2022?
Good on a typical day: median AQI 36, with 0 days above AQI 100 out of 365 monitored — the 4th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 82 (Moderate).
- ✓Ground-level ozone was the main pollutant on 194 days.
- ✓Cleanest month: July; worst: January.
Frequently asked questions
What was the average AQI in Santa Rosa in 2022?▾
EPA's Air Quality System puts Santa Rosa's (Santa Rosa, CA) median daily AQI for 2022 at 36, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 82.
Which month had the worst air quality in Santa Rosa in 2022?▾
The cleanest month of 2022 was July (median AQI 21, 0 days above 100) and the worst was January (median 54, 0 days above 100, peak 65).
Was 2022 a good or bad year for Santa Rosa's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 4th cleanest by days above AQI 100. 2022's median of 36 is in line with the area's typical annual median of 36.
Santa Rosa month by month in 2022
Santa Rosa air quality month by month, 2022 (Santa Rosa, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januaryworst | 31 | 54 | 0 | 65 | PM2.5 |
| February | 28 | 45 | 0 | 58 | PM2.5 |
| March | 31 | 39 | 0 | 51 | O3 |
| April | 30 | 39 | 0 | 52 | O3 |
| May | 31 | 36 | 0 | 62 | O3 |
| June | 30 | 29 | 0 | 51 | O3 |
| Julycleanest | 31 | 21 | 0 | 46 | O3 |
| August | 31 | 22 | 0 | 57 | O3 |
| September | 30 | 31 | 0 | 63 | O3 |
| October | 31 | 32 | 0 | 55 | O3 |
| November | 30 | 49 | 0 | 68 | PM2.5 |
| December | 31 | 50 | 0 | 82 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 4th cleanest by days above AQI 100.
2022's median of 36 is in line with the area's typical annual median of 36.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Santa Rosa
The latest EPA AirNow observation puts Santa Rosa's AQI at 15 (O3). The figures above are multi-year annual statistics, not today's reading.
View current Santa Rosa air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Santa Rosa, 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.