Fort Worth Air Quality in Fall
Across 2019–2025, Fort Worth's fall (September–November) air quality had a median AQI of 56 (Moderate) over 637 monitored days in the Dallas-Fort Worth-Arlington, TX area. 14.3% of fall days (91 of 637) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 49.5% of days. The cleanest fall on record here was 2020 (median AQI 52, 3 days above 100) and the worst was 2025 (median 58, 22 days above 100, peak AQI 179).
- Good: 32.8%
- Moderate: 52.9%
- Unhealthy for Sensitive Groups: 13.2%
- Unhealthy or worse: 1.1%
Extra Protection for Fort Worth Homes
Air quality in Fort Worth is moderate (AQI 55), 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 Fort Worth in fall?
Moderate on a typical day: median AQI 56 across 2019–2025, with 14.3% of fall days above AQI 100. Ground-level ozone is the main driver.
- ✓32.8% of fall days were Good (AQI 0–50), 52.9% Moderate (51–100).
- ✓91 days of 637 reached AQI 101+; the fall peak was 179.
- ✓Cleanest month: November; worst month: September.
Frequently asked questions
What is the air quality like in Fort Worth in fall?▾
Across 2019–2025, the median daily AQI in Fort Worth in fall was 56 (Moderate). 32.8% of days were Good, 52.9% Moderate, and 14.3% 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 Worth?▾
A typical fall day in Fort Worth is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 7 of fall days (14.3%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Fort Worth's fall air quality problems?▾
Ground-level ozone set the daily AQI on 49.5% of fall days in Fort Worth. The highest fall AQI recorded in 2019–2025 was 179 (Unhealthy), in 2025.
Fort Worth fall air quality, year by year
Fort Worth fall air quality by year (Dallas-Fort Worth-Arlington, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 91 | 54 | 7 | 156 | PM2.5 |
| 2020cleanest | 91 | 52 | 3 | 134 | PM2.5 |
| 2021 | 91 | 52 | 11 | 159 | O3 |
| 2022 | 91 | 62 | 18 | 133 | PM2.5 |
| 2023 | 91 | 59 | 15 | 151 | PM2.5 |
| 2024 | 91 | 59 | 15 | 156 | O3 |
| 2025worst | 91 | 58 | 22 | 179 | O3 |
What fall air means in Fort Worth
A typical fall day in Fort Worth is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 7 of fall days (14.3%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Fall's median AQI of 56 is in line with Fort Worth's whole-year median of 58, 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 Worth runs above the national Fall norm; 14.3% of its Fall days topped AQI 100 versus 1.5% nationally (above average).
Within the season, November is the cleanest month (median AQI 53, 0.0% of days above 100) and September the worst (median 68, 28.1% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Fort Worth
The latest EPA AirNow observation puts Fort Worth's AQI at 55 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Fort Worth air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Dallas-Fort Worth-Arlington, TX), 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.