Fort Wayne Air Quality in Fall
Across 2019–2025, Fort Wayne's fall (September–November) air quality had a median AQI of 46 (Good) over 637 monitored days in the Fort Wayne, IN area. 0.5% of fall days (3 of 637) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 69.7% of days. The cleanest fall on record here was 2021 (median AQI 41, 0 days above 100) and the worst was 2025 (median 43, 2 days above 100, peak AQI 108).
- Good: 58.2%
- Moderate: 41.3%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
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How is the air in Fort Wayne in fall?
Good on a typical day: median AQI 46 across 2019–2025, with 0.5% of fall days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓58.2% of fall days were Good (AQI 0–50), 41.3% Moderate (51–100).
- ✓3 days of 637 reached AQI 101+; the fall peak was 108.
- ✓Cleanest month: October; worst month: September.
Frequently asked questions
What is the air quality like in Fort Wayne in fall?▾
Across 2019–2025, the median daily AQI in Fort Wayne in fall was 46 (Good). 58.2% of days were Good, 41.3% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 637 monitored days in EPA's Air Quality System.
Is fall a good time for outdoor exercise in Fort Wayne?▾
A typical fall day in Fort Wayne sits in the Good range (median AQI 46), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Which pollutant causes Fort Wayne's fall air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 69.7% of fall days in Fort Wayne. The highest fall AQI recorded in 2019–2025 was 108 (Unhealthy for Sensitive Groups), in 2025.
Fort Wayne fall air quality, year by year
Fort Wayne fall air quality by year (Fort Wayne, IN, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 91 | 52 | 1 | 101 | PM2.5 |
| 2020 | 91 | 47 | 0 | 75 | PM2.5 |
| 2021cleanest | 91 | 41 | 0 | 73 | PM2.5 |
| 2022 | 91 | 46 | 0 | 77 | PM2.5 |
| 2023 | 91 | 47 | 0 | 64 | PM2.5 |
| 2024 | 91 | 41 | 0 | 97 | PM2.5 |
| 2025worst | 91 | 43 | 2 | 108 | PM2.5 |
What fall air means in Fort Wayne
A typical fall day in Fort Wayne sits in the Good range (median AQI 46), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Fall's median AQI of 46 is in line with Fort Wayne's whole-year median of 49, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Fall AQI across every EPA metro area (296,275 metro-days, 2019–2025) is 40, so Fort Wayne runs above the national Fall norm; 0.5% of its Fall days topped AQI 100 versus 1.5% nationally (about the same).
Within the season, October is the cleanest month (median AQI 41, 0.0% of days above 100) and September the worst (median 49, 1.4% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Fort Wayne
The latest EPA AirNow observation puts Fort Wayne's AQI at 27 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Fort Wayne air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Fort Wayne, 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.