Minneapolis Air Quality in March
Across 2019–2025, Minneapolis's March air quality had a median AQI of 47 (Good) over 217 monitored days in the Minneapolis-St. Paul-Bloomington, MN-WI area. 0.0% of March days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 51.2% of days. The cleanest March on record here was 2022 (median AQI 41, 0 days above 100) and the worst was 2019 (median 58, 0 days above 100, peak AQI 87).
- Good: 56.7%
- Moderate: 43.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Minneapolis
Today's main pollutant in Minneapolis is ground-level ozone (AQI 25). 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.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How is the air in Minneapolis in March?
Good on a typical day: median AQI 47 across 2019–2025, with 0.0% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓56.7% of March days were Good (AQI 0–50), 43.3% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the March peak was 89.
- ✓Best March: 2022; worst March: 2019.
Frequently asked questions
What is the air quality like in Minneapolis in March?▾
Across 2019–2025, the median daily AQI in Minneapolis in March was 47 (Good). 56.7% of days were Good, 43.3% Moderate, and 0.0% 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 Minneapolis?▾
A typical March day in Minneapolis sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
Which pollutant causes Minneapolis's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 51.2% of March days in Minneapolis. The highest March AQI recorded in 2019–2025 was 89 (Moderate), in 2019.
Minneapolis March air quality, year by year
Minneapolis March air quality by year (Minneapolis-St. Paul-Bloomington, MN-WI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 58 | 0 | 87 | PM2.5 |
| 2020 | 31 | 46 | 0 | 66 | PM2.5 |
| 2021 | 31 | 53 | 0 | 89 | PM2.5 |
| 2022cleanest | 31 | 41 | 0 | 69 | O3 |
| 2023 | 31 | 50 | 0 | 80 | O3 |
| 2024 | 31 | 42 | 0 | 68 | O3 |
| 2025 | 31 | 42 | 0 | 69 | O3 |
What March air means in Minneapolis
A typical March day in Minneapolis sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
March's median AQI of 47 is in line with Minneapolis's whole-year median of 50, 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 Minneapolis runs above the national March norm; 0.0% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Minneapolis's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Minneapolis
The latest EPA AirNow observation puts Minneapolis's AQI at 25 (O3). The figures above are multi-year month statistics, not today's reading.
View current Minneapolis air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Minneapolis-St. Paul-Bloomington, MN-WI), 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.