Lansdale, PA
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.
Lansdale, PA air quality summary: Lansdale, PA, holds a Clean Air Score of 78.2 and a grade of B. The city's annual PM2.5 mean is 6.9, reflecting a moderate level of long-term particulate exposure. Lansdale has an annual PM2.5 mean of 6.9, which is considered moderate for long-term exposure. Long-term air quality in Lansdale has been improving over recent years.
Clean Air Score
The Clean Air Score of 78.2 and grade of B indicate that Lansdale typically experiences air quality that is favorable for long-term health. These values reflect a consistent pattern of fine particulate levels within healthy environmental ranges.
🏡 What This Means for Buying
Lansdale's air quality is a stable and positive environmental factor to consider for long-term residency. Air quality should be treated as one factor in a broader relocation or housing decision.
Indoor Air Quality in Lansdale, PA
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 Lansdale.
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 Lansdale:
- 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 Lansdale Homes:
🩺 My Health Risk Assessment
See how Lansdale'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, Lansdale's air quality improved by 0.7 μg/m³. Based on NBER studies, this change correlates with a estimated 2.8% increase in relative property value retention.
Cleaner Alternatives in PA
Why Lansdale earned a 78.2
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% | 72.3 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 53.5 |
| Seasonal Variability | 10% | 93.3 |
| 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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Lansdale Air Quality FAQs
Is Lansdale a good fit for people who care about long-term air quality?
Lansdale is a solid choice for air quality concerns, with a score of 78.2 and a grade of B. The annual PM2.5 mean of 6.9 represents a moderate level of chronic exposure.
What is the frequency of unhealthy air or long-term pollution exposure in Lansdale?
Lansdale records an unhealthy days percentage of 0, supporting its B grade and PM2.5 mean. This indicates that residents are rarely exposed to significant pollution events.
Is air quality in Lansdale improving or getting worse over time?
Air quality in Lansdale is showing an improving trend. Long-term data suggests that particulate levels have been trending downward in recent years.
Does air quality vary within different parts of Lansdale?
Air quality can vary within the city due to local traffic, industry, and location patterns. Factors like local industrial zones and traffic flow can influence local concentrations of fine particulates.