North Haven, CT
Long-term air quality
What this page tells you
This page combines annual PM2.5, unhealthy days, 5-year trend, and data coverage so you can compare long-term air quality, not just today's reading.
North Haven, CT air quality summary: North Haven, CT, holds a CleanAirData score of 81.5 and a grade of B for its long-term air quality. The annual mean concentration of PM2.5 in the area is 6.4 µg/m³. In North Haven, the annual mean PM2.5 concentration is 6.4 µg/m³. Long-term air quality in North Haven has been improving over recent years.
Clean Air Score
The score of 81.5 and B grade indicate air quality conditions that are favorable for long-term residence. These values reflect moderate but generally low particulate exposure levels.
🏡 What This Means for Buying
Air quality is a positive factor for those considering long-term residency in North Haven. Current data suggests a stable environment with acceptable particulate levels.
Indoor Air Quality in North Haven, CT
Outdoor pollution can still affect indoor air when windows are open, filtration is weak, or wildfire smoke moves in.
How to react when today's AQI changes
Use the AQI bands below to decide whether to open windows, run an air purifier, or stay indoors when pollution spikes in North Haven.
AQI 0-50
GoodOpen windows: Open windows if you want fresh air.
Air purifier: No purifier needed for most homes.
Indoor activity: Normal indoor activity is fine.
AQI 51-100
ModerateOpen windows: Sensitive groups should limit open-window time.
Air purifier: Use fans or filtration if dust or pollen is bothering you.
Indoor activity: Most people can stay active indoors.
AQI 101-150
Unhealthy for Sensitive GroupsOpen windows: Keep windows closed.
Air purifier: Run a HEPA purifier in the main room and bedroom.
Indoor activity: Sensitive groups should reduce outdoor exposure.
AQI 151+
UnhealthyOpen windows: Keep windows and doors closed.
Air purifier: Run HEPA continuously and seal obvious drafts.
Indoor activity: Stay indoors as much as possible; use an N95 if you must go out.
Common indoor air concerns in North Haven:
- Seasonal pollen and dust mite allergens
- VOCs from household products
Recommended action: If today's AQI reaches 101 or higher, close windows and run HEPA filtration before indoor air starts to feel smoky or stale.
Top Products for North Haven Homes:
🩺 My Health Risk Assessment
See how North Haven's air quality affects you and your family specifically.
Health Advice
Enjoy the outdoors! Air quality is great.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, North Haven's air quality improved by 0.8 μg/m³. Based on NBER studies, this change correlates with a estimated 3.2% increase in relative property value retention.
Cleaner Alternatives in CT
Why North Haven earned a 81.5
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
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Cycling Forecast
Avoid pollution spikes on your next ride.
📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
🌸 Pollen Outlook
Current Seasonal Forecast
How it worksBased on current seasonal forecast data. Not a long-term pollution rating or relocation score.
Score Breakdown
| Component | Weight | Score Contribution |
|---|---|---|
| Annual Air Quality | 40% | 80.4 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 54 |
| Seasonal Variability | 10% | 93.6 |
| Extreme Events | 5% | 100 |
Explore More Air Quality Data
Frequently Asked Questions
About This Data
Data Sources
Historical air quality mapping and scoring are based completely on official U.S. Environmental Protection Agency (EPA) AirNow API data. 5-day AQI forecasts are provided by WAQI.
Methodology
Our Clean Air Score (0-100) is a proprietary algorithm that weighs multiple factors:
- Annual PM2.5 averages (40%)
- Frequency of unhealthy days (25%)
- 5-year pollution trends (20%)
- Seasonal variability and extreme events (15%)
Updates & Accuracy
Real-time data is updated hourly. Historical aggregate scores are recalculated monthly to reflect the latest trends. While we strive for accuracy, sensor maintenance and local conditions can affect individual readings.
Practical Advice
When AQI > 100: Sensitive groups (children, elderly, asthmatics) should limit prolonged outdoor exertion.
When AQI > 150: Everyone should avoid outdoor exercise and keep windows closed.
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North Haven Air Quality FAQs
Is North Haven a good fit for people who care about long-term air quality?
North Haven is a good fit, with an 81.5 score and a B grade. The annual PM2.5 average of 6.4 µg/m³ represents a healthy long-term environment.
What is the frequency of unhealthy air or long-term pollution exposure in North Haven?
North Haven records 0% unhealthy air days, which reinforces its B grade. This is complemented by an annual mean PM2.5 concentration of 6.4 µg/m³.
Is air quality in North Haven improving or getting worse over time?
The trend for air quality in North Haven is improving over the long term. Data indicates a consistent decrease in fine particulate matter levels in recent years.
Does air quality vary across different parts of North Haven?
Air quality can vary within North Haven based on proximity to major highways, commercial centers, and local industrial areas. These factors can create localized conditions that differ from the city-wide average.