Kirkland, 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.
Kirkland, WA air quality summary: Kirkland, WA boasts an excellent clean air score of 85.4 and a grade of A, with an annual PM2.5 mean of 5.7. The city offers a high-quality air environment for long-term residency. Kirkland recorded an annual PM2.5 mean of 5.7 micrograms per cubic meter. Long-term air quality in Kirkland has been improving over recent years.
Clean Air Score
The 85.4 score and A grade reflect Kirkland's success in maintaining very low levels of particulate pollution. This performance is among the best for urban areas, indicating a minimal risk for long-term exposure.
🏡 What This Means for Buying
For those prioritizing environmental health, Kirkland's A grade for air quality is an exceptional factor for long-term housing decisions. Residents can expect consistently clean air with almost no pollution spikes.
Indoor Air Quality in Kirkland, 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 Kirkland.
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 Kirkland:
- 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 Kirkland Homes:
🩺 My Health Risk Assessment
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Health Advice
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Kirkland's air quality improved by 1.2 μg/m³. Based on NBER studies, this change correlates with a estimated 4.8% increase in relative property value retention.
Cleaner Alternatives in WA
Why Kirkland earned a 85.4
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% | 89.7 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 56 |
| Seasonal Variability | 10% | 95.5 |
| 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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Kirkland Air Quality FAQs
Is Kirkland a good fit for people who care about long-term air quality?
Kirkland, WA is an excellent choice, as evidenced by its 85.4 score and A grade. The low annual PM2.5 mean of 5.7 is a testament to the city's clean environmental conditions.
How often does Kirkland experience unhealthy air?
Kirkland reports 0% unhealthy air days, which is a key component of its A grade and 5.7 PM2.5 mean. This indicates that air quality remains within healthy limits year-round.
Is Kirkland's air quality improving or getting worse over time?
Air quality in Kirkland is on an improving trend, showing that long-term conditions are becoming even more favorable. This reflects positive environmental management in the city and surrounding region.
How does air quality vary across Kirkland?
Air quality can vary within Kirkland due to local traffic, industry, and location patterns, although the overall city-wide averages remain very high.