Fresno Air Quality in February
Across 2019–2025, Fresno's February air quality had a median AQI of 59 (Moderate) over 198 monitored days in the Fresno, CA area. 2.0% of February days (4 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 81.8% of days. The cleanest February on record here was 2019 (median AQI 52, 0 days above 100) and the worst was 2022 (median 83, 2 days above 100, peak AQI 103).
- Good: 27.8%
- Moderate: 70.2%
- Unhealthy for Sensitive Groups: 2.0%
- Unhealthy or worse: 0.0%
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Air quality in Fresno is moderate (AQI 69), with particle pollution the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How is the air in Fresno in February?
Moderate on a typical day: median AQI 59 across 2019–2025, with 2.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓27.8% of February days were Good (AQI 0–50), 70.2% Moderate (51–100).
- ✓4 days of 198 reached AQI 101+; the February peak was 119.
- ✓Best February: 2019; worst February: 2022.
Frequently asked questions
What is the air quality like in Fresno in February?▾
Across 2019–2025, the median daily AQI in Fresno in February was 59 (Moderate). 27.8% of days were Good, 70.2% Moderate, and 2.0% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Fresno?▾
A typical February day in Fresno is Moderate (median AQI 59): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 50 of February days (2.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Fresno's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 81.8% of February days in Fresno. The highest February AQI recorded in 2019–2025 was 119 (Unhealthy for Sensitive Groups), in 2022.
Fresno February air quality, year by year
Fresno February air quality by year (Fresno, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 28 | 52 | 0 | 78 | PM2.5 |
| 2020 | 29 | 67 | 0 | 92 | PM2.5 |
| 2021 | 28 | 61 | 2 | 119 | PM2.5 |
| 2022worst | 28 | 83 | 2 | 103 | PM2.5 |
| 2023 | 28 | 59 | 0 | 89 | PM2.5 |
| 2024 | 29 | 54 | 0 | 80 | PM2.5 |
| 2025 | 28 | 54 | 0 | 82 | PM2.5 |
What February air means in Fresno
A typical February day in Fresno is Moderate (median AQI 59): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 50 of February days (2.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
February's median AQI of 59 is below Fresno's whole-year median of 67, making it one of the area's cleaner periods. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Fresno runs above the national February norm; 2.0% of its February days topped AQI 100 versus 0.4% nationally (above average).
February is part of Fresno's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Fresno
The latest EPA AirNow observation puts Fresno's AQI at 69 (PM10). The figures above are multi-year month statistics, not today's reading.
View current Fresno air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Fresno, 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.