Maple Valley, 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.
Maple Valley, WA air quality summary: Maple Valley, WA maintains a Clean Air Score of 78.5 and an air quality grade of B. The city's long-term particulate levels are measured by an annual PM2.5 mean of 6.9 µg/m³. At 6.9 µg/m³ annually, Maple Valley is characterized by moderate or acceptable but still relevant for long-term exposure. Long-term air quality in Maple Valley has been improving over recent years.
Clean Air Score
A grade of B indicates that Maple Valley experiences favorable long-term air quality conditions. The 78.5 score reflects historical data patterns regarding particulate exposure over time.
🏡 What This Means for Buying
Prospective residents in Maple Valley should evaluate air quality as one factor in their long-term housing or relocation decisions. Guidance suggests using this historical B grade to understand the city's general atmospheric profile.
Indoor Air Quality in Maple Valley, 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 Maple Valley.
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 Maple Valley:
- 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 Maple Valley Homes:
🩺 My Health Risk Assessment
See how Maple Valley'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 2020 and 2024, Maple Valley's air quality improved by 4.4 μg/m³. Based on NBER studies, this change correlates with a estimated 15% increase in relative property value retention.
Cleaner Alternatives in WA
Why Maple Valley 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% | 73.2 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 72 |
| Seasonal Variability | 10% | 92.6 |
| 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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Maple Valley Air Quality FAQs
Is Maple Valley a good fit for people who care about long-term air quality?
Maple Valley, WA currently holds a Clean Air Score of 78.5 and a grade of B. With an annual PM2.5 mean of 6.9 µg/m³, it offers a reliable profile for long-term environmental considerations.
How often does Maple Valley experience unhealthy air frequency or long-term pollution exposure?
Maple Valley has an unhealthy-air frequency of 0%, which aligns with its B grade. This indicates that long-term particulate exposure is generally governed by the annual mean of 6.9 µg/m³.
Is the air quality in Maple Valley improving or getting worse over time?
Monitoring of Maple Valley's atmosphere indicates that long-term air quality has been improving over recent years over the historical period.
Does air quality vary within different parts of Maple Valley?
Air quality can vary within Maple Valley due to local traffic, industry, and location patterns, even without a formal neighborhood structure.