Mount Vernon, WA
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.
Mount Vernon, WA air quality summary: Mount Vernon, WA, holds an excellent clean air score of 89.6 and a grade of A. The annual PM2.5 mean is 4.4, reflecting a very healthy long-term environment. Mount Vernon records an annual PM2.5 mean of 4.4, which is considered a low level of long-term particulate exposure. Long-term air quality in Mount Vernon has been improving over recent years.
Clean Air Score
A clean air score of 89.6 and a grade of A indicate that Mount Vernon enjoys superior atmospheric conditions. This grade signifies a highly favorable environment for those concerned with long-term air health.
🏡 What This Means for Buying
Mount Vernon's air quality is a major asset for anyone evaluating the area for long-term living. The consistent A grade suggests that residents can expect a high standard of air quality over time.
Indoor Air Quality in Mount Vernon, WA
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 Mount Vernon.
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 Mount Vernon:
- Wildfire smoke infiltration (PM2.5)
- 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 Mount Vernon Homes:
🩺 My Health Risk Assessment
See how Mount Vernon's air quality affects you and your family specifically.
Health Advice
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Mount Vernon's air quality improved by 1.1 μg/m³. Based on NBER studies, this change correlates with a estimated 4.4% increase in relative property value retention.
Cleaner Alternatives in WA
No cleaner cities found in this state. Mount Vernon is already a top performer!
Why Mount Vernon earned a 89.6
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% | 100 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 55.5 |
| Seasonal Variability | 10% | 96.3 |
| 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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Mount Vernon Air Quality FAQs
Is Mount Vernon a good fit for people who care about long-term air quality?
Mount Vernon is an exceptional choice, featuring a clean air score of 89.6 and a grade of A. The annual PM2.5 mean of 4.4 confirms a very healthy long-term environment.
What is the frequency of unhealthy air in Mount Vernon?
Mount Vernon reports 0% unhealthy days, meaning residents are rarely exposed to acute pollution events. This performance is consistent with its A grade and low annual PM2.5 mean.
Is air quality in Mount Vernon improving or getting worse over time?
Air quality in Mount Vernon is currently improving. Recent data suggests a positive trend in overall particulate levels.
Does air quality vary within Mount Vernon?
Air quality can vary within the city due to local traffic, industry, and location patterns. Individual neighborhoods may experience different particulate levels based on local conditions.