Grand Rapids Air Quality in January
Across 2019–2025, Grand Rapids's January air quality had a median AQI of 46 (Good) over 217 monitored days in the Grand Rapids-Wyoming, MI area. 0.0% of January days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 81.1% of days. The cleanest January on record here was 2020 (median AQI 36, 0 days above 100) and the worst was 2021 (median 54, 0 days above 100, peak AQI 85).
- Good: 57.1%
- Moderate: 42.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Grand Rapids Homes
Air quality in Grand Rapids 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.
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How is the air in Grand Rapids in January?
Good on a typical day: median AQI 46 across 2019–2025, with 0.0% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓57.1% of January days were Good (AQI 0–50), 42.9% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the January peak was 96.
- ✓Best January: 2020; worst January: 2021.
Frequently asked questions
What is the air quality like in Grand Rapids in January?▾
Across 2019–2025, the median daily AQI in Grand Rapids in January was 46 (Good). 57.1% of days were Good, 42.9% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Grand Rapids?▾
A typical January day in Grand Rapids sits in the Good range (median AQI 46), 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 Grand Rapids's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 81.1% of January days in Grand Rapids. The highest January AQI recorded in 2019–2025 was 96 (Moderate), in 2021.
Grand Rapids January air quality, year by year
Grand Rapids January air quality by year (Grand Rapids-Wyoming, MI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 37 | 0 | 67 | PM2.5 |
| 2020cleanest | 31 | 36 | 0 | 65 | PM2.5 |
| 2021worst | 31 | 54 | 0 | 85 | PM2.5 |
| 2022 | 31 | 49 | 0 | 96 | PM2.5 |
| 2023 | 31 | 51 | 0 | 85 | PM2.5 |
| 2024 | 31 | 52 | 0 | 76 | PM2.5 |
| 2025 | 31 | 44 | 0 | 78 | PM2.5 |
What January air means in Grand Rapids
A typical January day in Grand Rapids sits in the Good range (median AQI 46), 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 46 is below Grand Rapids's whole-year median of 51, making it one of the area's cleaner periods. Nationally, the median January AQI across every EPA metro area (95,602 metro-days, 2019–2025) is 39, so Grand Rapids 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 Grand Rapids's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Grand Rapids
The latest EPA AirNow observation puts Grand Rapids's AQI at 53 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Grand Rapids air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Grand Rapids-Wyoming, 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.