Santa Ynez Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Santa Ynez is moderate. AQI, PM2.5, PM10, and NO2 are moderate; O3 is fair; SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM10: 55.6/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Santa Ynez is moderate. NO2 decreases to fair; all other pollutants stay as today. Pollution peaks around 2:00 AM (PM10: 45.1/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 55.6/100 |
| PM2.5 (fine particles) | Moderate | 47.0/100 |
| PM10 (coarse particles) | Moderate | 55.6/100 |
| NO2 (nitrogen dioxide) | Moderate | 41.4/100 |
| O3 (ozone) | Fair | 20.3/100 |
| SO2 (sulfur dioxide) | Good | 3.0/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 2.4/100 |
| PM1 (ultrafine particles) | Good | 12.8/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 45.1/100 |
| PM2.5 (fine particles) | Moderate | 42.1/100 |
| PM10 (coarse particles) | Moderate | 45.1/100 |
| NO2 (nitrogen dioxide) | Fair | 36.2/100 |
| O3 (ozone) | Fair | 23.8/100 |
| SO2 (sulfur dioxide) | Good | 4.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 2.0/100 |
| PM1 (ultrafine particles) | Good | 10.3/100 |
Local Environmental Conditions
Around the center of Santa Ynez, a mix of built-up land and open space means traffic is an important, but not overwhelming, local pollution source. Open grassland and scrub can produce smoke during grass fires and some dust in dry spells. Pockets of trees and green space help filter a small share of the particles from traffic. Pollution carried in from the wider region can also raise levels at times.
Warm, sunny weather from July to September, around 22°C at its peak, raises afternoon ozone levels. Air near roads is often at its worst from January to March, when nights cool to around 12°C and the air turns still. The risk of wildfire smoke peaks from May to October, when dry vegetation burns easily.
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Frequently Asked Questions About Air Quality in California
Is air quality bad in Santa Ynez right now?
On 6 October 2026, overall air quality in Santa Ynez is moderate. AQI is the main air quality indicator at 55.6/100. Pollution peaks around 12:00 AM (PM10: 55.6/100).
Will air quality be worse tomorrow in Santa Ynez?
On 7 October 2026, air quality conditions in Santa Ynez will be similar to today, with AQI forecast at moderate at 45.1/100. Pollution peaks around 2:00 AM (PM10: 45.1/100).
When is air pollution at its worst in Santa Ynez?
Warm, sunny weather from July to September, around 22°C at its peak, raises afternoon ozone levels. Air near roads is often at its worst from January to March, when nights cool to around 12°C and the air turns still. The risk of wildfire smoke peaks from May to October, when dry vegetation burns easily.
Are air quality levels in Santa Ynez 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. |