Birmingham Air Quality in February
Across 2019–2025, Birmingham's February air quality had a median AQI of 55 (Moderate) over 198 monitored days in the Birmingham-Hoover, AL area. 0.0% of February days (0 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 91.4% of days. The cleanest February on record here was 2020 (median AQI 52, 0 days above 100) and the worst was 2023 (median 58, 0 days above 100, peak AQI 98).
- Good: 35.4%
- Moderate: 64.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Birmingham
Today's main pollutant in Birmingham is ground-level ozone (AQI 30). 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.
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How is the air in Birmingham in February?
Moderate on a typical day: median AQI 55 across 2019–2025, with 0.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓35.4% of February days were Good (AQI 0–50), 64.6% Moderate (51–100).
- ✓0 days of 198 reached AQI 101+; the February peak was 99.
- ✓Best February: 2020; worst February: 2023.
Frequently asked questions
What is the air quality like in Birmingham in February?▾
Across 2019–2025, the median daily AQI in Birmingham in February was 55 (Moderate). 35.4% of days were Good, 64.6% Moderate, and 0.0% 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 Birmingham?▾
A typical February day in Birmingham is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of February days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Birmingham's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 91.4% of February days in Birmingham. The highest February AQI recorded in 2019–2025 was 99 (Moderate), in 2023.
Birmingham February air quality, year by year
Birmingham February air quality by year (Birmingham-Hoover, AL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 54 | 0 | 64 | PM2.5 |
| 2020cleanest | 29 | 52 | 0 | 99 | PM2.5 |
| 2021 | 28 | 55 | 0 | 76 | PM2.5 |
| 2022 | 28 | 55 | 0 | 81 | PM2.5 |
| 2023worst | 28 | 58 | 0 | 98 | PM2.5 |
| 2024 | 29 | 54 | 0 | 88 | PM2.5 |
| 2025 | 28 | 56 | 0 | 85 | PM2.5 |
What February air means in Birmingham
A typical February day in Birmingham is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of February days 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 55 is in line with Birmingham's whole-year median of 56, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Birmingham runs above the national February norm; 0.0% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Birmingham's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Birmingham
The latest EPA AirNow observation puts Birmingham's AQI at 30 (O3). The figures above are multi-year month statistics, not today's reading.
View current Birmingham air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Birmingham-Hoover, AL), 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.