Birmingham Air Quality in 2025
In 2025, Birmingham's air quality (Birmingham-Hoover, AL area) had a median daily AQI of 52 (Moderate) across 365 monitored days. 2 days (0.5%) reached Unhealthy for Sensitive Groups or worse, 157 were Good, and the year's peak AQI was 117 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 280 of those days. The cleanest month of 2025 was May (median AQI 45, 0 days above 100) and the worst was March (median 59, 1 day above 100, peak 112).
- Good: 43.0%
- Moderate: 56.4%
- Unhealthy for Sensitive Groups: 0.5%
- 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 was Birmingham's air quality in 2025?
Moderate on a typical day: median AQI 52, with 2 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 117 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 280 days.
- ✓Cleanest month: May; worst: March.
Frequently asked questions
What was the average AQI in Birmingham in 2025?▾
EPA's Air Quality System puts Birmingham's (Birmingham-Hoover, AL) median daily AQI for 2025 at 52, which is Moderate. 2 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 117.
Which month had the worst air quality in Birmingham in 2025?▾
The cleanest month of 2025 was May (median AQI 45, 0 days above 100) and the worst was March (median 59, 1 day above 100, peak 112).
Was 2025 a good or bad year for Birmingham'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 52 is below the area's typical annual median of 56.
Birmingham month by month in 2025
Birmingham air quality month by month, 2025 (Birmingham-Hoover, AL, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 55 | 0 | 85 | PM2.5 |
| February | 28 | 56 | 0 | 85 | PM2.5 |
| Marchworst | 31 | 59 | 1 | 112 | PM2.5 |
| April | 30 | 55 | 0 | 87 | PM2.5 |
| Maycleanest | 31 | 45 | 0 | 62 | PM2.5 |
| June | 30 | 51 | 0 | 81 | PM2.5 |
| July | 31 | 46 | 0 | 76 | PM2.5 |
| August | 31 | 45 | 0 | 58 | O3 |
| September | 30 | 56 | 0 | 100 | O3 |
| October | 31 | 45 | 0 | 71 | O3 |
| November | 30 | 52 | 0 | 78 | PM2.5 |
| December | 31 | 54 | 1 | 117 | 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 52 is below the area's typical annual median of 56.
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 annual 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.