Dayton Air Quality in November
Across 2019–2025, Dayton's November air quality had a median AQI of 49 (Good) over 210 monitored days in the Dayton, OH 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 90.0% of days. The cleanest November on record here was 2024 (median AQI 35, 0 days above 100) and the worst was 2022 (median 56, 0 days above 100, peak AQI 76).
- Good: 51.4%
- Moderate: 48.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Dayton in November?
Good on a typical day: median AQI 49 across 2019–2025, with 0.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓51.4% of November days were Good (AQI 0–50), 48.6% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the November peak was 97.
- ✓Best November: 2024; worst November: 2022.
Frequently asked questions
What is the air quality like in Dayton in November?▾
Across 2019–2025, the median daily AQI in Dayton in November was 49 (Good). 51.4% of days were Good, 48.6% 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 Dayton?▾
A typical November day in Dayton sits in the Good range (median AQI 49), 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 Dayton's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 90.0% of November days in Dayton. The highest November AQI recorded in 2019–2025 was 97 (Moderate), in 2022.
Dayton November air quality, year by year
Dayton November air quality by year (Dayton, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 55 | 0 | 87 | PM2.5 |
| 2020 | 30 | 55 | 0 | 96 | PM2.5 |
| 2021 | 30 | 48 | 0 | 97 | PM2.5 |
| 2022worst | 30 | 56 | 0 | 76 | PM2.5 |
| 2023 | 30 | 48 | 0 | 70 | PM2.5 |
| 2024cleanest | 30 | 35 | 0 | 59 | PM2.5 |
| 2025 | 30 | 45 | 0 | 64 | PM2.5 |
What November air means in Dayton
A typical November day in Dayton sits in the Good range (median AQI 49), 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 49 is in line with Dayton's whole-year median of 51, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Dayton 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 Dayton's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Dayton
The latest EPA AirNow observation puts Dayton's AQI at 50 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Dayton air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Dayton, OH), 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.