Flint Air Quality in January
Across 2019–2025, Flint's January air quality had a median AQI of 39 (Good) over 204 monitored days in the Flint, MI area. 0.0% of January days (0 of 204) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 100.0% of days. The cleanest January on record here was 2025 (median AQI 28, 0 days above 100) and the worst was 2023 (median 53, 0 days above 100, peak AQI 79).
- Good: 64.7%
- Moderate: 35.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Flint in January?
Good on a typical day: median AQI 39 across 2019–2025, with 0.0% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓64.7% of January days were Good (AQI 0–50), 35.3% Moderate (51–100).
- ✓0 days of 204 reached AQI 101+; the January peak was 81.
- ✓Best January: 2025; worst January: 2023.
Frequently asked questions
What is the air quality like in Flint in January?▾
Across 2019–2025, the median daily AQI in Flint in January was 39 (Good). 64.7% of days were Good, 35.3% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 204 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Flint?▾
A typical January day in Flint sits in the Good range (median AQI 39), 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 Flint's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of January days in Flint. The highest January AQI recorded in 2019–2025 was 81 (Moderate), in 2023.
Flint January air quality, year by year
Flint January air quality by year (Flint, MI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 19 | 39 | 0 | 66 | PM2.5 |
| 2020 | 31 | 30 | 0 | 63 | PM2.5 |
| 2021 | 31 | 46 | 0 | 65 | PM2.5 |
| 2022 | 30 | 45 | 0 | 81 | PM2.5 |
| 2023worst | 31 | 53 | 0 | 79 | PM2.5 |
| 2024 | 31 | 42 | 0 | 70 | PM2.5 |
| 2025cleanest | 31 | 28 | 0 | 65 | PM2.5 |
What January air means in Flint
A typical January day in Flint sits in the Good range (median AQI 39), 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 39 is in line with Flint's whole-year median of 42, 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 Flint runs in line with the national January norm; 0.0% of its January days topped AQI 100 versus 0.7% nationally (about the same).
January is part of Flint's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Flint
The latest EPA AirNow observation puts Flint's AQI at 20 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Flint air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Flint, MI), 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.