Irvine, CA
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Is Irvine one of the cleaner cities in Orange County?
Irvine benefits from coastal air flow but still sees traffic-driven pollution and occasional wildfire smoke. This page summarizes long-term PM2.5, trend direction, and the indoor steps that matter when outdoor air worsens.
Irvine, CA air quality summary: Irvine, CA maintains a clean air score of 53.7 and a grade of D, indicating a history of moderate to high particulate levels. The annual mean PM2.5 concentration for the city is 10.8 µg/m³. The annual mean concentration of PM2.5 in Irvine is 10.8 µg/m³. Long-term air quality in Irvine has been improving over recent years.
Clean Air Score
A clean air score of 53.7 and a grade of D reflect significant particulate exposure in Irvine over the long term. These metrics suggest that air quality is an important consideration for the city's residents.
🏡 What This Means for Buying
Air quality should be considered a key environmental factor in any long-term housing decision in Irvine. The city's D grade indicates a level of exposure that homebuyers should evaluate carefully.
Indoor Air Quality in Irvine, 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 Irvine.
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 Irvine:
- 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 Irvine Homes:
🩺 My Health Risk Assessment
See how Irvine'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, Irvine'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.
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Why Irvine earned a 49.4
Raw inputs, scoring weights, and data coverage for this city.
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Cycling Forecast
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📅 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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Irvine Air Quality FAQs
Is Irvine a good fit for people who care about long-term air quality?
Irvine's clean air score of 53.7 and grade of D show moderate to high particulate exposure. The annual PM2.5 mean of 10.8 µg/m³ is an important data point for those prioritizing air quality.
How frequent is unhealthy air in Irvine?
In Irvine, 0.5% of days are classified as unhealthy, which aligns with its D grade and PM2.5 mean of 10.8 µg/m³. This reflects occasional exposure to higher levels of pollution.
Is air quality in Irvine improving or getting worse over time?
The long-term air quality trend in Irvine has been improving in recent years, though current particulate levels remain moderate.
Does air quality vary within Irvine?
Air quality can vary within Irvine due to local factors like traffic density, topography, and proximity to industrial zones.