Madison Air Quality in November
Across 2019–2025, Madison's November air quality had a median AQI of 39 (Good) over 210 monitored days in the Madison, 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 100.0% of days. The cleanest November on record here was 2025 (median AQI 31, 0 days above 100) and the worst was 2020 (median 52, 0 days above 100, peak AQI 66).
- Good: 62.9%
- Moderate: 37.1%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Madison in November?
Good on a typical day: median AQI 39 across 2019–2025, with 0.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓62.9% of November days were Good (AQI 0–50), 37.1% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the November peak was 83.
- ✓Best November: 2025; worst November: 2020.
Frequently asked questions
What is the air quality like in Madison in November?▾
Across 2019–2025, the median daily AQI in Madison in November was 39 (Good). 62.9% of days were Good, 37.1% 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 Madison?▾
A typical November day in Madison 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 November days reached AQI 101+ in 2019–2025.
Which pollutant causes Madison's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of November days in Madison. The highest November AQI recorded in 2019–2025 was 83 (Moderate), in 2020.
Madison November air quality, year by year
Madison November air quality by year (Madison, WI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 41 | 0 | 81 | PM2.5 |
| 2020worst | 30 | 52 | 0 | 66 | PM2.5 |
| 2021 | 30 | 42 | 0 | 61 | PM2.5 |
| 2022 | 30 | 46 | 0 | 73 | PM2.5 |
| 2023 | 30 | 36 | 0 | 83 | PM2.5 |
| 2024 | 30 | 32 | 0 | 62 | PM2.5 |
| 2025cleanest | 30 | 31 | 0 | 64 | PM2.5 |
What November air means in Madison
A typical November day in Madison 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 November days reached AQI 101+ in 2019–2025.
November's median AQI of 39 is below Madison's whole-year median of 45, 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 Madison runs in line with the national November norm; 0.0% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of Madison's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Madison
The latest EPA AirNow observation puts Madison's AQI at 49 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Madison air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Madison, 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.