Rochester, 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.
Rochester, NH air quality summary: Rochester, NH boasts a high clean air score of 87.4 and a grade of A for its long-term air quality. The city maintains an annual PM2.5 mean of 5.3 micrograms per cubic meter. The annual PM2.5 mean in Rochester is 5.3, which is considered moderate or acceptable but still relevant for long-term exposure. Long-term air quality in Rochester has seen limited or modest change over recent years.
Clean Air Score
A clean air score of 87.4 and an A grade signify that Rochester enjoys excellent long-term air quality with minimal particulate exposure. This indicates a very favorable environment for long-term health and wellness.
🏡 What This Means for Buying
Air quality in Rochester is a significant asset for residents and should be treated as a positive factor in housing decisions. The A grade reflects a highly desirable environmental profile.
Indoor Air Quality in Rochester, 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 Rochester.
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 Rochester:
- 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 Rochester Homes:
🩺 My Health Risk Assessment
See how Rochester'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, Rochester'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. Rochester is already a top performer!
Why Rochester 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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Rochester Air Quality FAQs
Is Rochester a good fit for people who care about long-term air quality?
Rochester, NH is an excellent choice, with an 87.4 clean air score and an A grade. The annual PM2.5 mean of 5.3 micrograms per cubic meter reflects a healthy long-term environment.
What is the frequency of unhealthy air or long-term pollution exposure in Rochester?
Rochester has an unhealthy days percentage of 0, which is consistent with its A grade. Long-term exposure to PM2.5 is low, averaging 5.3 micrograms per cubic meter.
Is air quality in Rochester improving or getting worse over time?
The change in Rochester's air quality has been limited or modest over recent years. This indicates a stable environmental condition for the area.
Does air quality vary across different parts of Rochester?
Air quality can vary within the city due to local traffic, industry, and location patterns. Some areas may experience different levels of exposure based on local factors.