Farmington, MN
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.
Farmington, MN air quality summary: Farmington, MN maintains a Clean Air Score of 78.5, resulting in an overall grade of B. The city has a long-term PM2.5 annual mean of 6.6 micrograms per cubic meter. Farmington has a recorded PM2.5 annual mean of 6.6 micrograms per cubic meter. The long-term air quality trend in Farmington is considered showing modest changes without a strong directional shift.
Clean Air Score
The score of 78.5 and grade of B reflect moderate particulate exposure over the long term. This evaluation provides a baseline for understanding the persistent atmospheric conditions in Farmington.
🏡 What This Means for Buying
Long-term air quality is one of several environmental factors that prospective residents should consider when evaluating Farmington. Potential homebuyers can use this data to understand the typical particulate levels they might encounter over many years.
Indoor Air Quality in Farmington, MN
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 Farmington.
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 Farmington:
- 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 Farmington Homes:
🩺 My Health Risk Assessment
See how Farmington'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, Farmington's air quality improved by 0.4 μg/m³. Based on NBER studies, this change correlates with a estimated 1.6% increase in relative property value retention.
Cleaner Alternatives in MN
Why Farmington earned a 78.5
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% | 76.6 |
| Unhealthy Days | 25% | 94.5 |
| 5-Year Trend | 20% | 50 |
| Seasonal Variability | 10% | 91.8 |
| 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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Farmington Air Quality FAQs
Is Farmington a good fit for people who care about long-term air quality?
Farmington holds a Clean Air Score of 78.5 and a grade of B. This corresponds to a PM2.5 annual mean of 6.6, which is a key indicator of long-term exposure.
What is the frequency of unhealthy air or long-term pollution exposure in Farmington?
In Farmington, the percentage of unhealthy air days is 0.3 percent. This frequency is evaluated alongside the annual PM2.5 mean of 6.6 and the overall grade of B.
Is the air quality in Farmington improving or getting worse over time?
Historical records indicate that the air quality trend in Farmington is showing modest changes without a strong directional shift.
Does air quality vary across different parts of Farmington?
Air quality can vary within the city due to local traffic patterns, industrial locations, and geographical features, even without distinct neighborhood monitoring.