Bakersfield Air Quality in 2025
In 2025, Bakersfield's air quality (Bakersfield, CA area) had a median daily AQI of 70 (Moderate) across 365 monitored days. 65 days (17.8%) reached Unhealthy for Sensitive Groups or worse, 64 were Good, and the year's peak AQI was 200 (Unhealthy). Ground-level ozone set the daily AQI on 196 of those days. The cleanest month of 2025 was March (median AQI 45, 0 days above 100) and the worst was June (median 100, 14 days above 100, peak 156).
- Good: 17.5%
- Moderate: 64.7%
- Unhealthy for Sensitive Groups: 16.7%
- Unhealthy or worse: 1.1%
Reduce Indoor Ozone in Bakersfield
Today's main pollutant in Bakersfield is ground-level ozone (AQI 74). 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 Bakersfield's air quality in 2025?
Moderate on a typical day: median AQI 70, with 65 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 200 (Unhealthy).
- ✓Ground-level ozone was the main pollutant on 196 days.
- ✓Cleanest month: March; worst: June.
Frequently asked questions
What was the average AQI in Bakersfield in 2025?▾
EPA's Air Quality System puts Bakersfield's (Bakersfield, CA) median daily AQI for 2025 at 70, which is Moderate. 65 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 200.
Which month had the worst air quality in Bakersfield in 2025?▾
The cleanest month of 2025 was March (median AQI 45, 0 days above 100) and the worst was June (median 100, 14 days above 100, peak 156).
Was 2025 a good or bad year for Bakersfield'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 70 is in line with the area's typical annual median of 72.
Bakersfield month by month in 2025
Bakersfield air quality month by month, 2025 (Bakersfield, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 71 | 2 | 105 | PM2.5 |
| February | 28 | 55 | 0 | 68 | PM2.5 |
| Marchcleanest | 31 | 45 | 0 | 58 | O3 |
| April | 30 | 58 | 1 | 107 | O3 |
| May | 31 | 84 | 8 | 147 | O3 |
| Juneworst | 30 | 100 | 14 | 156 | O3 |
| July | 31 | 90 | 12 | 147 | O3 |
| August | 31 | 93 | 11 | 166 | O3 |
| September | 30 | 76 | 7 | 140 | O3 |
| October | 31 | 68 | 2 | 119 | PM2.5 |
| November | 30 | 69 | 2 | 200 | PM2.5 |
| December | 31 | 75 | 6 | 161 | 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 70 is in line with the area's typical annual median of 72.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Bakersfield
The latest EPA AirNow observation puts Bakersfield's AQI at 74 (O3). The figures above are multi-year annual statistics, not today's reading.
View current Bakersfield air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Bakersfield, 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.