San Buenaventura Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in San Buenaventura is fair. AQI, PM10, NO2, and O3 are fair; PM2.5, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 AM (O3: 23.6/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in San Buenaventura is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 31.1/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 23.6/100 |
| PM2.5 (fine particles) | Good | 13.4/100 |
| PM10 (coarse particles) | Fair | 20.7/100 |
| NO2 (nitrogen dioxide) | Fair | 22.0/100 |
| O3 (ozone) | Fair | 23.6/100 |
| SO2 (sulfur dioxide) | Good | 0.7/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.5/100 |
| PM1 (ultrafine particles) | Good | 7.7/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 31.1/100 |
| PM2.5 (fine particles) | Fair | 20.7/100 |
| PM10 (coarse particles) | Fair | 26.9/100 |
| NO2 (nitrogen dioxide) | Fair | 31.1/100 |
| O3 (ozone) | Fair | 23.9/100 |
| SO2 (sulfur dioxide) | Good | 1.2/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 2.4/100 |
| PM1 (ultrafine particles) | Good | 14.0/100 |
Local Environmental Conditions
With buildings covering much of the area around the heart of San Buenaventura, traffic and other urban emissions are the biggest local influence on air quality. Lying in a basin, the area is prone to temperature inversions that hold pollutants near the ground when winds drop. Its position by the Pacific Ocean brings breezes that often clear pollutants away. Traffic on US-101 adds to local emissions.
Hot afternoons from June to September, averaging 26°C in the warmest month, are when ozone is most likely to build up. From January to March, cold air settles into the basin on calm nights and traps emissions from home heating and traffic near the ground; temperatures average about 10°C, with winds of around 10 km/h.
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Frequently Asked Questions About Air Quality in California
Is air quality bad in San Buenaventura right now?
On 10 October 2026, overall air quality in San Buenaventura is fair. AQI is the main air quality indicator at 23.6/100. Pollution peaks around 3:00 AM (O3: 23.6/100).
Will air quality be worse tomorrow in San Buenaventura?
On 11 October 2026, air quality conditions in San Buenaventura will be similar to today, with AQI forecast at fair at 31.1/100. Pollution peaks around 4:00 PM (NO2: 31.1/100).
When is air pollution at its worst in San Buenaventura?
Hot afternoons from June to September, averaging 26°C in the warmest month, are when ozone is most likely to build up. From January to March, cold air settles into the basin on calm nights and traps emissions from home heating and traffic near the ground; temperatures average about 10°C, with winds of around 10 km/h.
Are air quality levels in San Buenaventura based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |