Birmingham Air Quality in Spring
Across 2019–2025, Birmingham's spring (March–May) air quality had a median AQI of 56 (Moderate) over 644 monitored days in the Birmingham-Hoover, AL area. 1.2% of spring days (8 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 72.8% of days. The cleanest spring on record here was 2020 (median AQI 54, 0 days above 100) and the worst was 2023 (median 59, 2 days above 100, peak AQI 109).
- Good: 28.3%
- Moderate: 70.5%
- Unhealthy for Sensitive Groups: 1.2%
- Unhealthy or worse: 0.0%
Extra Protection for Birmingham Homes
Air quality in Birmingham is moderate (AQI 53), with fine particles (PM2.5) 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.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Birmingham in spring?
Moderate on a typical day: median AQI 56 across 2019–2025, with 1.2% of spring days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓28.3% of spring days were Good (AQI 0–50), 70.5% Moderate (51–100).
- ✓8 days of 644 reached AQI 101+; the spring peak was 117.
- ✓Cleanest month: April; worst month: March.
Frequently asked questions
What is the air quality like in Birmingham in spring?▾
Across 2019–2025, the median daily AQI in Birmingham in spring was 56 (Moderate). 28.3% of days were Good, 70.5% Moderate, and 1.2% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in Birmingham?▾
A typical spring day in Birmingham is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 83 of spring days (1.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Birmingham's spring air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 72.8% of spring days in Birmingham. The highest spring AQI recorded in 2019–2025 was 117 (Unhealthy for Sensitive Groups), in 2023.
Birmingham spring air quality, year by year
Birmingham spring air quality by year (Birmingham-Hoover, AL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 58 | 2 | 112 | PM2.5 |
| 2020cleanest | 92 | 54 | 0 | 78 | PM2.5 |
| 2021 | 92 | 58 | 1 | 101 | PM2.5 |
| 2022 | 92 | 55 | 1 | 101 | PM2.5 |
| 2023worst | 92 | 59 | 2 | 109 | PM2.5 |
| 2024 | 92 | 56 | 1 | 117 | PM2.5 |
| 2025 | 92 | 54 | 1 | 112 | PM2.5 |
What spring air means in Birmingham
A typical spring day in Birmingham is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 83 of spring days (1.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Spring's median AQI of 56 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 Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Birmingham runs above the national Spring norm; 1.2% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).
Within the season, April is the cleanest month (median AQI 57, 0.5% of days above 100) and March the worst (median 55, 2.3% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Birmingham
The latest EPA AirNow observation puts Birmingham's AQI at 53 (PM2.5). The figures above are multi-year season 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.