Birmingham Air Quality in Summer
Across 2019–2025, Birmingham's summer (June–August) air quality had a median AQI of 57 (Moderate) over 644 monitored days in the Birmingham-Hoover, AL area. 4.8% of summer days (31 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 76.7% of days. The cleanest summer on record here was 2025 (median AQI 49, 0 days above 100) and the worst was 2023 (median 66, 16 days above 100, peak AQI 255).
- Good: 24.4%
- Moderate: 70.8%
- Unhealthy for Sensitive Groups: 3.7%
- Unhealthy or worse: 1.1%
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 summer?
Moderate on a typical day: median AQI 57 across 2019–2025, with 4.8% of summer days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓24.4% of summer days were Good (AQI 0–50), 70.8% Moderate (51–100).
- ✓31 days of 644 reached AQI 101+; the summer peak was 255.
- ✓Cleanest month: August; worst month: June.
Frequently asked questions
What is the air quality like in Birmingham in summer?▾
Across 2019–2025, the median daily AQI in Birmingham in summer was 57 (Moderate). 24.4% of days were Good, 70.8% Moderate, and 4.8% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is summer a good time for outdoor exercise in Birmingham?▾
A typical summer day in Birmingham is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 21 of summer days (4.8%) 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 summer air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 76.7% of summer days in Birmingham. The highest summer AQI recorded in 2019–2025 was 255 (Very Unhealthy), in 2023.
Birmingham summer air quality, year by year
Birmingham summer 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 | 150 | PM2.5 |
| 2020 | 92 | 56 | 2 | 121 | PM2.5 |
| 2021 | 92 | 58 | 4 | 189 | PM2.5 |
| 2022 | 92 | 54 | 2 | 105 | PM2.5 |
| 2023worst | 92 | 66 | 16 | 255 | PM2.5 |
| 2024 | 92 | 58 | 5 | 119 | PM2.5 |
| 2025cleanest | 92 | 49 | 0 | 81 | PM2.5 |
What summer air means in Birmingham
A typical summer day in Birmingham is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 21 of summer days (4.8%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Summer's median AQI of 57 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 Summer AQI across every EPA metro area (308,645 metro-days, 2019–2025) is 46, so Birmingham runs above the national Summer norm; 4.8% of its Summer days topped AQI 100 versus 3.6% nationally (above average).
Within the season, August is the cleanest month (median AQI 58, 3.2% of days above 100) and June the worst (median 58, 7.2% 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.