Louisville Air Quality in November
Across 2019–2025, Louisville's November air quality had a median AQI of 54 (Moderate) over 210 monitored days in the Louisville/Jefferson County, KY-IN area. 1.0% of November days (2 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 92.9% of days. The cleanest November on record here was 2024 (median AQI 49, 0 days above 100) and the worst was 2022 (median 60, 1 day above 100, peak AQI 120).
- Good: 36.2%
- Moderate: 62.9%
- Unhealthy for Sensitive Groups: 1.0%
- Unhealthy or worse: 0.0%
Extra Protection for Louisville Homes
Air quality in Louisville is moderate (AQI 61), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Louisville in November?
Moderate on a typical day: median AQI 54 across 2019–2025, with 1.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓36.2% of November days were Good (AQI 0–50), 62.9% Moderate (51–100).
- ✓2 days of 210 reached AQI 101+; the November peak was 120.
- ✓Best November: 2024; worst November: 2022.
Frequently asked questions
What is the air quality like in Louisville in November?▾
Across 2019–2025, the median daily AQI in Louisville in November was 54 (Moderate). 36.2% of days were Good, 62.9% Moderate, and 1.0% 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 Louisville?▾
A typical November day in Louisville is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of November days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Louisville's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 92.9% of November days in Louisville. The highest November AQI recorded in 2019–2025 was 120 (Unhealthy for Sensitive Groups), in 2022.
Louisville November air quality, year by year
Louisville November air quality by year (Louisville/Jefferson County, KY-IN, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 54 | 0 | 86 | PM2.5 |
| 2020 | 30 | 55 | 1 | 108 | PM2.5 |
| 2021 | 30 | 53 | 0 | 96 | PM2.5 |
| 2022worst | 30 | 60 | 1 | 120 | PM2.5 |
| 2023 | 30 | 58 | 0 | 96 | PM2.5 |
| 2024cleanest | 30 | 49 | 0 | 60 | PM2.5 |
| 2025 | 30 | 52 | 0 | 68 | PM2.5 |
What November air means in Louisville
A typical November day in Louisville is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of November days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
November's median AQI of 54 is in line with Louisville's whole-year median of 54, 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 Louisville runs above the national November norm; 1.0% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of Louisville's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Louisville
The latest EPA AirNow observation puts Louisville's AQI at 61 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Louisville air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Louisville/Jefferson County, KY-IN), 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.