White Plains Air Quality in May
Across 2019–2025, White Plains's May air quality had a median AQI of 53 (Moderate) over 217 monitored days in the New York-Newark-Jersey City, NY-NJ-PA area. 1.8% of May days (4 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 53.5% of days. The cleanest May on record here was 2020 (median AQI 46, 0 days above 100) and the worst was 2021 (median 53, 2 days above 100, peak AQI 129).
- Good: 41.5%
- Moderate: 56.7%
- Unhealthy for Sensitive Groups: 1.8%
- Unhealthy or worse: 0.0%
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How is the air in White Plains in May?
Moderate on a typical day: median AQI 53 across 2019–2025, with 1.8% of May days above AQI 100. Ground-level ozone is the main driver.
- ✓41.5% of May days were Good (AQI 0–50), 56.7% Moderate (51–100).
- ✓4 days of 217 reached AQI 101+; the May peak was 133.
- ✓Best May: 2020; worst May: 2021.
Frequently asked questions
What is the air quality like in White Plains in May?▾
Across 2019–2025, the median daily AQI in White Plains in May was 53 (Moderate). 41.5% of days were Good, 56.7% Moderate, and 1.8% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is May a good time for outdoor exercise in White Plains?▾
A typical May day in White Plains is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 56 of May days (1.8%) 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 May air quality problems?▾
Ground-level ozone set the daily AQI on 53.5% of May days in White Plains. The highest May AQI recorded in 2019–2025 was 133 (Unhealthy for Sensitive Groups), in 2021.
White Plains May air quality, year by year
White Plains May 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 | 31 | 57 | 0 | 100 | PM2.5 |
| 2020cleanest | 31 | 46 | 0 | 64 | O3 |
| 2021worst | 31 | 53 | 2 | 129 | O3 |
| 2022 | 31 | 52 | 0 | 93 | PM2.5 |
| 2023 | 31 | 60 | 1 | 105 | O3 |
| 2024 | 31 | 49 | 1 | 133 | O3 |
| 2025 | 31 | 52 | 0 | 93 | O3 |
What May air means in White Plains
A typical May day in White Plains is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 56 of May days (1.8%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
May's median AQI of 53 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 May AQI across every EPA metro area (104,064 metro-days, 2019–2025) is 44, so White Plains runs above the national May norm; 1.8% of its May days topped AQI 100 versus 1.3% nationally (about the same).
May is part of White Plains's spring season (March, April, May); the spring page pools all three months.
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 month 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.