Rowland Heights, 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.
Rowland Heights, CA air quality summary: Rowland Heights, CA has a clean air score of 49.4 and a D grade for air quality. The city's annual PM2.5 mean is 10.9 µg/m³. Rowland Heights recorded an annual PM2.5 mean of 10.9, which is considered moderate or acceptable but still relevant for long-term exposure. Long-term air quality in Rowland Heights has been worsening over recent years.
Clean Air Score
The clean air score of 49.4 and D grade indicate that long-term air quality in Rowland Heights is below average. These metrics reflect persistent levels of particulate matter that exceed those found in cleaner regions.
🏡 What This Means for Buying
For those considering a home in Rowland Heights, air quality should be weighed as one component of the living environment. The D grade suggests that long-term exposure levels are higher than in many other areas.
Indoor Air Quality in Rowland Heights, 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 Rowland Heights.
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 Rowland Heights:
- 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 Rowland Heights Homes:
🩺 My Health Risk Assessment
See how Rowland Heights's air quality affects you and your family specifically.
Health Advice
Reduce prolonged outdoor exertion.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Rowland Heights's air quality worsened by 1.7 μg/m³. Based on NBER studies, this change correlates with a estimated 6.8% decrease in relative property value retention.
Cleaner Alternatives in CA
Why Rowland Heights earned a 49.4
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% | 16.4 |
| Unhealthy Days | 25% | 78.1 |
| 5-Year Trend | 20% | 41.5 |
| Seasonal Variability | 10% | 82.8 |
| 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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Rowland Heights Air Quality FAQs
Is Rowland Heights a good fit for people who care about long-term air quality?
Rowland Heights has a clean air score of 49.4 and a D grade, making it less ideal for those prioritizing low pollution. The annual PM2.5 mean of 10.9 reflects a moderate amount of long-term exposure.
What is the frequency of unhealthy air or long-term pollution exposure in Rowland Heights?
Rowland Heights has 1.1% unhealthy days, which is linked to its D grade and PM2.5 mean of 10.9. This suggests periodic episodes of higher pollution throughout the year.
Is air quality in Rowland Heights improving or getting worse over time?
The air quality trend in Rowland Heights has been worsening over recent years. This suggests that particulate levels have been increasing over the long term.
How does air quality vary within Rowland Heights?
Air quality can vary within the city due to local traffic, industry, and location patterns. Specific neighborhood conditions can be affected by elevation and proximity to transit hubs.