Saint Michael, 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.
Saint Michael, MN air quality summary: Saint Michael, MN, features a clean air score of 78.4 and a grade of B, with an annual PM2.5 mean of 6.6 µg/m³. These figures indicate a favorable and stable air quality environment for long-term residency. Saint Michael has an annual PM2.5 mean of 6.6 µg/m³, which is described as a moderate but acceptable level for long-term exposure. The air quality trend in Saint Michael is currently classified as neutral, indicating limited change in recent years.
Clean Air Score
The clean air score of 78.4 and grade of B reflect a moderate air quality profile with consistent compliance with health-based standards. This indicates that the city consistently maintains air quality within acceptable parameters.
🏡 What This Means for Buying
The B grade suggests that Saint Michael offers a reliable environmental context for residents. Air quality should be factored into any long-term housing or relocation assessment as a standard metric.
Indoor Air Quality in Saint Michael, 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 Saint Michael.
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 Saint Michael:
- 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 Saint Michael Homes:
🩺 My Health Risk Assessment
See how Saint Michael'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, Saint Michael'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 MN
Why Saint Michael earned a 78.4
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% | 76.6 |
| Unhealthy Days | 25% | 94.5 |
| 5-Year Trend | 20% | 50 |
| Seasonal Variability | 10% | 91.2 |
| 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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Saint Michael Air Quality FAQs
Is Saint Michael a good fit for people who care about long-term air quality?
Saint Michael is a strong choice with a clean air score of 78.4 and a grade of B. The annual PM2.5 mean of 6.6 µg/m³ indicates a generally favorable environment for long-term living.
What is the frequency of unhealthy air days in Saint Michael?
Saint Michael reports an unhealthy days percentage of 0.3%, which is quite low. This supports its B grade and annual PM2.5 mean of 6.6 µg/m³ as representative of typical long-term conditions.
Is the air quality in Saint Michael improving or getting worse over time?
The air quality trend in Saint Michael is neutral, showing limited or modest change in pollution levels over recent years.
Does air quality vary across different parts of Saint Michael?
Air quality can vary within the city due to local traffic, industry, and location patterns. Individual areas may experience different particulate concentrations based on proximity to major transit routes and local commercial centers.