St. Paul Air Quality in November
Across 2019–2025, St. Paul's November air quality had a median AQI of 44 (Good) over 210 monitored days in the Minneapolis-St. Paul-Bloomington, MN-WI area. 0.0% of November days (0 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 74.8% of days. The cleanest November on record here was 2024 (median AQI 38, 0 days above 100) and the worst was 2019 (median 53, 0 days above 100, peak AQI 69).
- Good: 61.4%
- Moderate: 38.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in St. Paul
Today's main pollutant in St. Paul 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 St. Paul in November?
Good on a typical day: median AQI 44 across 2019–2025, with 0.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓61.4% of November days were Good (AQI 0–50), 38.6% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the November peak was 87.
- ✓Best November: 2024; worst November: 2019.
Frequently asked questions
What is the air quality like in St. Paul in November?▾
Across 2019–2025, the median daily AQI in St. Paul in November was 44 (Good). 61.4% of days were Good, 38.6% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is November a good time for outdoor exercise in St. Paul?▾
A typical November day in St. Paul 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 November days reached AQI 101+ in 2019–2025.
Which pollutant causes St. Paul's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 74.8% of November days in St. Paul. The highest November AQI recorded in 2019–2025 was 87 (Moderate), in 2019.
St. Paul November air quality, year by year
St. Paul November 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 | 30 | 53 | 0 | 69 | PM2.5 |
| 2020 | 30 | 48 | 0 | 80 | PM2.5 |
| 2021 | 30 | 41 | 0 | 72 | PM2.5 |
| 2022 | 30 | 49 | 0 | 87 | PM2.5 |
| 2023 | 30 | 41 | 0 | 79 | PM2.5 |
| 2024cleanest | 30 | 38 | 0 | 58 | PM2.5 |
| 2025 | 30 | 38 | 0 | 63 | PM2.5 |
What November air means in St. Paul
A typical November day in St. Paul 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 November days reached AQI 101+ in 2019–2025.
November's median AQI of 44 is below St. Paul's whole-year median of 50, making it one of the area's cleaner periods. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so St. Paul runs above the national November norm; 0.0% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of St. Paul's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in St. Paul
The latest EPA AirNow observation puts St. Paul's AQI at 25 (O3). The figures above are multi-year month statistics, not today's reading.
View current St. Paul 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.