Derry Village, NH
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.
Derry Village, NH air quality summary: Derry Village, NH, maintains an impressive clean air score of 87.4 and a grade of A, reflecting superior long-term air quality. The city's annual PM2.5 mean is 5.3 µg/m³, which is exceptionally low. Derry Village has an annual PM2.5 mean of 5.3 µg/m³, representing a relatively low level of long-term particulate exposure. The long-term air quality in Derry Village has shown limited change over recent years.
Clean Air Score
A grade of A and a score of 87.4 indicate that Derry Village enjoys high standards of air clarity over extended periods. These ratings signify an environment with very little long-term pollution impact.
🏡 What This Means for Buying
For those looking to move to Derry Village, the A grade is a strong sign of a healthy atmospheric environment. Air quality is a consistent and reliable advantage for long-term residency in this area.
Indoor Air Quality in Derry Village, NH
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 Derry Village.
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 Derry Village:
- 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 Derry Village Homes:
🩺 My Health Risk Assessment
See how Derry Village'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, Derry Village's air quality improved by 0.1 μg/m³. Based on NBER studies, this change correlates with a estimated 0.4% increase in relative property value retention.
Cleaner Alternatives in NH
No cleaner cities found in this state. Derry Village is already a top performer!
Why Derry Village earned a 87.4
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
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% | 95.7 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 50 |
| Seasonal Variability | 10% | 91.3 |
| 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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Derry Village Air Quality FAQs
Is Derry Village a good fit for people who care about long-term air quality?
Derry Village is a superb option for air-quality conscious individuals, with its clean air score of 87.4 and grade of A. The annual PM2.5 mean of 5.3 µg/m³ supports a very clean long-term environment.
What is the frequency of unhealthy air or long-term pollution exposure in Derry Village?
Derry Village reports an unhealthy days percentage of 0, which is an excellent result for its grade. This indicates that exposure to significant pollution is extremely rare.
Is air quality in Derry Village improving or getting worse over time?
The air quality trend in Derry Village is currently stable, meaning there has been limited change in pollution levels over recent years.
Does air quality vary across different parts of Derry Village?
Air quality can vary within Derry Village due to local traffic, industry, and location patterns, although the city-wide grade remains a strong reference point.