Windsor, CA
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.
Windsor, CA air quality summary: Windsor, CA, features an excellent clean air score of 88.8 and a grade of A. The annual PM2.5 mean for the city is 5 micrograms per cubic meter. Windsor's annual PM2.5 mean is 5, representing relatively low long-term particulate exposure. Long-term air quality in Windsor has been improving over recent years.
Clean Air Score
An 88.8 clean air score and an A grade represent some of the highest standards for long-term air quality. These metrics indicate very low levels of particulate matter over an extended period.
🏡 What This Means for Buying
The air quality in Windsor is a strong asset for those considering long-term residency. Homebuyers can view these stable A-grade conditions as a reliable baseline for the local environment.
Indoor Air Quality in Windsor, CA
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 Windsor.
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 Windsor:
- 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 Windsor Homes:
🩺 My Health Risk Assessment
See how Windsor'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, Windsor's air quality improved by 1.3 μg/m³. Based on NBER studies, this change correlates with a estimated 5.2% increase in relative property value retention.
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Why Windsor earned a 88.8
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
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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% | 99.7 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 56.5 |
| Seasonal Variability | 10% | 89.9 |
| 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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Windsor Air Quality FAQs
Is Windsor a good fit for people who care about long-term air quality?
Windsor is an ideal location for air-quality-conscious individuals, boasting a clean air score of 88.8 and an A grade. The low PM2.5 mean of 5 highlights its superior environmental standing.
What is the frequency of unhealthy air exposure in Windsor?
Windsor maintains a 0% frequency of unhealthy air days, supporting its A grade. This indicates that residents are rarely exposed to elevated particulate levels.
Is air quality in Windsor improving or getting worse over time?
Air quality in Windsor is on an improving trend. Recent years have seen a consistent maintenance of high air quality standards in the region.
Does air quality vary across different parts of Windsor?
Air quality can vary within the city due to local traffic, industry, and location patterns. However, the overall city-wide metrics remain consistently high.