White Plains Air Quality in Fall
Across 2019–2025, White Plains's fall (September–November) air quality had a median AQI of 52 (Moderate) over 637 monitored days in the New York-Newark-Jersey City, NY-NJ-PA area. 0.9% of fall days (6 of 637) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 77.4% of days. The cleanest fall on record here was 2022 (median AQI 51, 0 days above 100) and the worst was 2023 (median 52, 2 days above 100, peak AQI 140).
- Good: 45.8%
- Moderate: 53.2%
- Unhealthy for Sensitive Groups: 0.9%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in White Plains, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in White Plains in fall?
Moderate on a typical day: median AQI 52 across 2019–2025, with 0.9% of fall days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓45.8% of fall days were Good (AQI 0–50), 53.2% Moderate (51–100).
- ✓6 days of 637 reached AQI 101+; the fall peak was 140.
- ✓Cleanest month: November; worst month: September.
Frequently asked questions
What is the air quality like in White Plains in fall?▾
Across 2019–2025, the median daily AQI in White Plains in fall was 52 (Moderate). 45.8% of days were Good, 53.2% Moderate, and 0.9% 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 White Plains?▾
A typical fall day in White Plains is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of fall days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes White Plains's fall air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 77.4% of fall days in White Plains. The highest fall AQI recorded in 2019–2025 was 140 (Unhealthy for Sensitive Groups), in 2023.
White Plains fall air quality, year by year
White Plains fall air quality by year (New York-Newark-Jersey City, NY-NJ-PA, 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 | 53 | 0 | 99 | PM2.5 |
| 2021 | 91 | 52 | 0 | 77 | PM2.5 |
| 2022cleanest | 91 | 51 | 0 | 69 | PM2.5 |
| 2023worst | 91 | 52 | 2 | 140 | PM2.5 |
| 2024 | 91 | 47 | 1 | 108 | PM2.5 |
| 2025 | 91 | 47 | 2 | 105 | PM2.5 |
What fall air means in White Plains
A typical fall day in White Plains is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of fall days 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 52 is in line with White Plains's whole-year median of 54, 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 White Plains runs above the national Fall norm; 0.9% of its Fall days topped AQI 100 versus 1.5% nationally (about the same).
Within the season, November is the cleanest month (median AQI 52, 0.0% of days above 100) and September the worst (median 52, 2.4% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in White Plains
The latest EPA AirNow observation puts White Plains's AQI at 45 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current White Plains air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (New York-Newark-Jersey City, NY-NJ-PA), 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.