Montgomery Air Quality in January
Across 2019–2025, Montgomery's January air quality had a median AQI of 44 (Good) over 175 monitored days in the Montgomery, AL area. 0.0% of January days (0 of 175) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 99.4% of days. The cleanest January on record here was 2025 (median AQI 31, 0 days above 100) and the worst was 2019 (median 58, 0 days above 100, peak AQI 77).
- Good: 57.7%
- Moderate: 42.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Montgomery
Today's main pollutant in Montgomery 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 Montgomery in January?
Good on a typical day: median AQI 44 across 2019–2025, with 0.0% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓57.7% of January days were Good (AQI 0–50), 42.3% Moderate (51–100).
- ✓0 days of 175 reached AQI 101+; the January peak was 77.
- ✓Best January: 2025; worst January: 2019.
Frequently asked questions
What is the air quality like in Montgomery in January?▾
Across 2019–2025, the median daily AQI in Montgomery in January was 44 (Good). 57.7% of days were Good, 42.3% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 175 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Montgomery?▾
A typical January day in Montgomery sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of January days reached AQI 101+ in 2019–2025.
Which pollutant causes Montgomery's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 99.4% of January days in Montgomery. The highest January AQI recorded in 2019–2025 was 77 (Moderate), in 2019.
Montgomery January air quality, year by year
Montgomery January air quality by year (Montgomery, AL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 58 | 0 | 77 | PM2.5 |
| 2020 | 29 | 52 | 0 | 68 | PM2.5 |
| 2021 | 20 | 53 | 0 | 61 | PM2.5 |
| 2022 | 31 | 40 | 0 | 60 | PM2.5 |
| 2023 | 10 | 32 | 0 | 51 | PM2.5 |
| 2024 | 27 | 37 | 0 | 57 | PM2.5 |
| 2025cleanest | 27 | 31 | 0 | 57 | PM2.5 |
What January air means in Montgomery
A typical January day in Montgomery sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of January days reached AQI 101+ in 2019–2025.
January's median AQI of 44 is in line with Montgomery's whole-year median of 44, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median January AQI across every EPA metro area (95,602 metro-days, 2019–2025) is 39, so Montgomery runs above the national January norm; 0.0% of its January days topped AQI 100 versus 0.7% nationally (about the same).
January is part of Montgomery's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Montgomery
The latest EPA AirNow observation puts Montgomery's AQI at 30 (O3). The figures above are multi-year month statistics, not today's reading.
View current Montgomery air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Montgomery, 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.