Torrance, 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.
Torrance, CA air quality summary: Torrance, CA has a clean air score of 38 and a grade of F, with a PM2.5 annual mean of 12.1. These metrics indicate elevated long-term particulate exposure for the area. Torrance recorded a PM2.5 annual mean of 12.1, which is described as elevated for long-term exposure. The long-term air quality trend in Torrance is described as worsening over recent years.
Clean Air Score
The clean air score of 38 and grade of F reflect particulate levels that are consistently higher than national averages. These values characterize the long-term air quality environment in Torrance as a significant factor for research.
🏡 What This Means for Buying
Air quality is an important consideration in a broader housing or relocation evaluation in Torrance. Prospective residents should review long-term particulate data as part of their comprehensive research process.
Indoor Air Quality in Torrance, 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 Torrance.
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 Torrance:
- 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 Torrance Homes:
🩺 My Health Risk Assessment
See how Torrance'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, Torrance's air quality worsened by 1.2 μg/m³. Based on NBER studies, this change correlates with a estimated 4.8% decrease in relative property value retention.
Cleaner Alternatives in CA
Why Torrance earned a 38
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% | 0 |
| Unhealthy Days | 25% | 61.2 |
| 5-Year Trend | 20% | 44 |
| Seasonal Variability | 10% | 77.2 |
| 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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Torrance Air Quality FAQs
Is Torrance a good fit for people who care about long-term air quality?
Torrance presents challenges for those focused on air quality, given its clean air score of 38 and F grade. The PM2.5 annual mean of 12.1 indicates a higher baseline for long-term particulate exposure.
How often does Torrance experience unhealthy air or long-term pollution exposure?
Unhealthy air frequency in Torrance is 1.9%, contributing to its overall F grade and PM2.5 annual mean of 12.1. This suggests that residents encounter periods of elevated pollution more frequently than in many other areas.
Is the air quality in Torrance improving or getting worse over time?
The air quality trend in Torrance is worsening, showing a rise in particulate levels over recent years. This trend is supported by 98.9% data completeness, indicating a well-documented decline in air quality.
Are there neighborhood-level differences in air quality in Torrance?
Air quality can vary within Torrance due to local traffic, industry, and location patterns. These local factors can lead to variations in particulate concentrations that may not be fully captured by regional proxy data.