Danvers, MA
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.
Danvers, MA air quality summary: Danvers, MA, has a clean air score of 55.4 and a grade of C, reflecting moderate long-term air quality. The city records an annual PM2.5 mean of 8.8 µg/m³, which is a key factor in its environmental profile. In Danvers, the annual PM2.5 mean is 8.8 µg/m³, representing a moderate level of long-term particulate exposure. The long-term air quality in Danvers has been worsening over recent years.
Clean Air Score
A score of 55.4 and a grade of C suggest that Danvers experiences a persistent presence of particulates. These ratings indicate that while the air is generally acceptable, it is not as clear as higher-graded areas.
🏡 What This Means for Buying
Prospective homebuyers in Danvers should factor the moderate air quality into their decision-making process. The current C grade indicates a stable but noticeable level of long-term pollution.
Indoor Air Quality in Danvers, MA
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 Danvers.
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 Danvers:
- 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 Danvers Homes:
🩺 My Health Risk Assessment
See how Danvers's air quality affects you and your family specifically.
Health Advice
Good for most outdoor activities.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Danvers's air quality worsened by 2.2 μg/m³. Based on NBER studies, this change correlates with a estimated 8.8% decrease in relative property value retention.
Cleaner Alternatives in MA
Why Danvers earned a 55.4
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
Cycling Forecast
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📅 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% | 45.5 |
| Unhealthy Days | 25% | 78.1 |
| 5-Year Trend | 20% | 39 |
| Seasonal Variability | 10% | 37.3 |
| Extreme Events | 5% | 80 |
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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Danvers Air Quality FAQs
Is Danvers a good fit for people who care about long-term air quality?
Danvers offers moderate air quality, as indicated by its clean air score of 55.4 and grade of C. The annual PM2.5 mean of 8.8 µg/m³ is a relevant metric for those prioritizing atmospheric health.
What is the frequency of unhealthy air or long-term pollution exposure in Danvers?
Danvers records unhealthy air conditions on approximately 1.1% of days, which is consistent with its grade of C. This suggests that residents may experience occasional periods of elevated pollution.
Is air quality in Danvers improving or getting worse over time?
The air quality trend in Danvers has been worsening over recent years, a factor that should be considered for long-term residency.
Does air quality vary across different parts of Danvers?
Air quality can vary within Danvers due to local traffic, industry, and location patterns, although the city-wide grade remains the primary reference.