Paso Robles, 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.
Paso Robles, CA air quality summary: Paso Robles, CA maintains a long-term clean air score of 88.7, resulting in a grade of A. The annual mean concentration of PM2.5 in Paso Robles is 4.9 µg/m³. Paso Robles recorded an annual mean PM2.5 concentration of 4.9 µg/m³, which represents relatively low long-term particulate exposure. The long-term air quality trend in Paso Robles is characterized as worsening over recent years.
Clean Air Score
The clean air score of 88.7 and grade of A reflect Paso Robles's long-term particulate matter exposure levels relative to national standards. This grade provides a standardized evaluation of the city's air quality over a multi-year period.
🏡 What This Means for Buying
For those evaluating a move to Paso Robles, air quality should be considered alongside other long-term living factors. Prospective residents should review the historical PM2.5 trends as part of their broader housing research.
Indoor Air Quality in Paso Robles, 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 Paso Robles.
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 Paso Robles:
- 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 Paso Robles Homes:
🩺 My Health Risk Assessment
See how Paso Robles'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, Paso Robles's air quality worsened by 0.8 μg/m³. Based on NBER studies, this change correlates with a estimated 3.2% decrease in relative property value retention.
Cleaner Alternatives in CA
Why Paso Robles earned a 88.7
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% | 100 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 46 |
| Seasonal Variability | 10% | 87.3 |
| 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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Paso Robles Air Quality FAQs
Is Paso Robles a good fit for people who care about long-term air quality?
Paso Robles has a clean air score of 88.7 and a grade of A, indicating its standing in long-term air quality evaluations. The annual mean PM2.5 level is 4.9 µg/m³, which should be weighed against individual preferences for air clarity.
How often does Paso Robles experience unhealthy air or high pollution exposure?
In Paso Robles, unhealthy air days occur at a rate of 0.0 percent annually. This frequency is a key component of the city's A grade and its 4.9 µg/m³ annual PM2.5 average.
Is the air quality in Paso Robles improving or getting worse over time?
The historical data for Paso Robles indicates that air quality is worsening over recent years.
Does air quality vary across different parts of Paso Robles?
Air quality can vary within Paso Robles due to local traffic, industry, and location patterns, even without specific neighborhood designations.