Coto De Caza Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Coto De Caza is moderate. AQI, PM2.5, and PM10 are moderate; O3 is fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (PM10: 55.0/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Coto De Caza is moderate. PM2.5 decreases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (PM10: 46.6/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 55.0/100 |
| PM2.5 (fine particles) | Moderate | 42.1/100 |
| PM10 (coarse particles) | Moderate | 55.0/100 |
| NO2 (nitrogen dioxide) | Good | 2.0/100 |
| O3 (ozone) | Fair | 22.7/100 |
| SO2 (sulfur dioxide) | Good | 1.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.9/100 |
| PM1 (ultrafine particles) | Good | 2.1/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 46.6/100 |
| PM2.5 (fine particles) | Fair | 36.1/100 |
| PM10 (coarse particles) | Moderate | 46.6/100 |
| NO2 (nitrogen dioxide) | Good | 4.5/100 |
| O3 (ozone) | Fair | 21.0/100 |
| SO2 (sulfur dioxide) | Good | 1.7/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 1.2/100 |
| PM1 (ultrafine particles) | Good | 2.3/100 |
Local Environmental Conditions
The heart of Coto De Caza combines built-up streets with more open land, so local traffic matters, though emissions are less concentrated than in a city center. The open grass and scrubland around the area can add dust in dry weather and smoke from occasional fires. The surrounding woodland releases natural compounds that, in warm sunny weather, help form ozone.
Summer sun from July to September cooks traffic fumes into ozone, especially in the warmest month, which averages 24°C. Air near roads is often at its worst from January to March, when nights cool to around 13°C and the air turns still. Wildfire season runs roughly from April to November, when smoke from fires, near or far, can bring hazy days and very poor air quality.
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Frequently Asked Questions About Air Quality in California
Is air quality bad in Coto De Caza right now?
On 6 October 2026, overall air quality in Coto De Caza is moderate. AQI is the main air quality indicator at 55.0/100. Pollution peaks around 2:00 PM (PM10: 55.0/100).
Will air quality be worse tomorrow in Coto De Caza?
On 7 October 2026, air quality conditions in Coto De Caza will be similar to today, with AQI forecast at moderate at 46.6/100. Pollution peaks around 9:00 AM (PM10: 46.6/100).
When is air pollution at its worst in Coto De Caza?
Summer sun from July to September cooks traffic fumes into ozone, especially in the warmest month, which averages 24°C. Air near roads is often at its worst from January to March, when nights cool to around 13°C and the air turns still. Wildfire season runs roughly from April to November, when smoke from fires, near or far, can bring hazy days and very poor air quality.
Are air quality levels in Coto De Caza 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. |