Detroit Air Quality in March
Across 2019–2025, Detroit's March air quality had a median AQI of 56 (Moderate) over 217 monitored days in the Detroit-Warren-Dearborn, MI area. 1.4% of March days (3 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 86.2% of days. The cleanest March on record here was 2024 (median AQI 52, 0 days above 100) and the worst was 2022 (median 61, 3 days above 100, peak AQI 125).
- Good: 31.8%
- Moderate: 66.8%
- Unhealthy for Sensitive Groups: 1.4%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in Detroit, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Detroit in March?
Moderate on a typical day: median AQI 56 across 2019–2025, with 1.4% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓31.8% of March days were Good (AQI 0–50), 66.8% Moderate (51–100).
- ✓3 days of 217 reached AQI 101+; the March peak was 125.
- ✓Best March: 2024; worst March: 2022.
Frequently asked questions
What is the air quality like in Detroit in March?▾
Across 2019–2025, the median daily AQI in Detroit in March was 56 (Moderate). 31.8% of days were Good, 66.8% Moderate, and 1.4% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Detroit?▾
A typical March day in Detroit is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 71 of March days (1.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Detroit's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 86.2% of March days in Detroit. The highest March AQI recorded in 2019–2025 was 125 (Unhealthy for Sensitive Groups), in 2022.
Detroit March air quality, year by year
Detroit March air quality by year (Detroit-Warren-Dearborn, MI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 64 | 0 | 80 | PM2.5 |
| 2020 | 31 | 55 | 0 | 72 | PM2.5 |
| 2021 | 31 | 54 | 0 | 85 | PM2.5 |
| 2022worst | 31 | 61 | 3 | 125 | PM2.5 |
| 2023 | 31 | 62 | 0 | 84 | PM2.5 |
| 2024cleanest | 31 | 52 | 0 | 80 | PM2.5 |
| 2025 | 31 | 52 | 0 | 69 | PM2.5 |
What March air means in Detroit
A typical March day in Detroit is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 71 of March days (1.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
March's median AQI of 56 is in line with Detroit's whole-year median of 58, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Detroit runs above the national March norm; 1.4% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Detroit's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Detroit
The latest EPA AirNow observation puts Detroit's AQI at 29 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Detroit air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Detroit-Warren-Dearborn, 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.