Bakersfield Air Quality in April
Across 2019–2025, Bakersfield's April air quality had a median AQI of 54 (Moderate) over 210 monitored days in the Bakersfield, CA area. 6.2% of April days (13 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 73.8% of days. The cleanest April on record here was 2024 (median AQI 51, 0 days above 100) and the worst was 2019 (median 54, 4 days above 100, peak AQI 115).
- Good: 32.4%
- Moderate: 61.4%
- Unhealthy for Sensitive Groups: 6.2%
- Unhealthy or worse: 0.0%
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 is the air in Bakersfield in April?
Moderate on a typical day: median AQI 54 across 2019–2025, with 6.2% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓32.4% of April days were Good (AQI 0–50), 61.4% Moderate (51–100).
- ✓13 days of 210 reached AQI 101+; the April peak was 145.
- ✓Best April: 2024; worst April: 2019.
Frequently asked questions
What is the air quality like in Bakersfield in April?▾
Across 2019–2025, the median daily AQI in Bakersfield in April was 54 (Moderate). 32.4% of days were Good, 61.4% Moderate, and 6.2% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Bakersfield?▾
A typical April day in Bakersfield is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 16 of April days (6.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Bakersfield's April air quality problems?▾
Ground-level ozone set the daily AQI on 73.8% of April days in Bakersfield. The highest April AQI recorded in 2019–2025 was 145 (Unhealthy for Sensitive Groups), in 2019.
Bakersfield April air quality, year by year
Bakersfield April air quality by year (Bakersfield, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 30 | 54 | 4 | 115 | O3 |
| 2020 | 30 | 51 | 1 | 115 | O3 |
| 2021 | 30 | 63 | 2 | 133 | O3 |
| 2022 | 30 | 58 | 2 | 145 | O3 |
| 2023 | 30 | 54 | 3 | 122 | O3 |
| 2024cleanest | 30 | 51 | 0 | 100 | O3 |
| 2025 | 30 | 58 | 1 | 107 | O3 |
What April air means in Bakersfield
A typical April day in Bakersfield is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 16 of April days (6.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
April's median AQI of 54 is below Bakersfield's whole-year median of 72, making it one of the area's cleaner periods. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Bakersfield runs above the national April norm; 6.2% of its April days topped AQI 100 versus 0.7% nationally (above average).
April is part of Bakersfield's spring season (March, April, May); the spring page pools all three months.
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 month 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.