Three Mile Bay, New York Air Quality
Three Mile Bay has a median AQI of 36, earning an air quality grade of A — excellent air quality that ranks better than 79% of US cities. Air quality has remained relatively stable over the past decade. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2025, Three Mile Bay recorded 255 good air quality days (94% of monitored days).
Population: 44 • County: Jefferson
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Quick Facts
| Current AQI | 15 — Good |
| Air Quality Grade | A |
| Median AQI (2025) | 36 |
| vs. U.S. Cities | Better than 79% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Three Mile Bay Air Quality
What is the air quality in Three Mile Bay today?
The current AQI in Three Mile Bay is 15, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Three Mile Bay getting better or worse?
Air quality in Three Mile Bay has remained relatively stable over the past decade, with a median AQI of around 36.
What is the most common air pollutant in Three Mile Bay?
Ozone is the primary air pollutant in Three Mile Bay, responsible for the most air quality-impacted days in 2025. Ground-level ozone forms when sunlight reacts with vehicle and industrial emissions on warm days.
How many unhealthy air days does Three Mile Bay have per year?
In 2025, Three Mile Bay had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 255 good days and 16 moderate days out of 271 days monitored.
What air quality grade does Three Mile Bay receive?
Three Mile Bay receives an air quality grade of A, placing it better than 79% of US cities. This grade is based on a median AQI of 36 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 79% of US cities
Nearby Cities
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National Rankings
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Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Three Mile Bay
Based on your area's air quality (median AQI: 36), we recommend these air purifiers to help protect your health indoors.
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Molekule Air Pro
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Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Dyson Pure Cool TP04
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