Harbison Canyon Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Harbison Canyon is poor. AQI and PM10 are poor; PM2.5 is moderate; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (PM10: 62.9/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Harbison Canyon is poor. All pollutants stay as today. Pollution peaks around 9:00 AM (PM10: 61.7/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Poor | 62.9/100 |
| PM2.5 (fine particles) | Moderate | 44.3/100 |
| PM10 (coarse particles) | Poor | 62.9/100 |
| NO2 (nitrogen dioxide) | Good | 3.4/100 |
| O3 (ozone) | Good | 17.1/100 |
| SO2 (sulfur dioxide) | Good | 1.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.8/100 |
| PM1 (ultrafine particles) | Good | 6.4/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Poor | 61.7/100 |
| PM2.5 (fine particles) | Moderate | 43.7/100 |
| PM10 (coarse particles) | Poor | 61.7/100 |
| NO2 (nitrogen dioxide) | Good | 3.6/100 |
| O3 (ozone) | Good | 15.4/100 |
| SO2 (sulfur dioxide) | Good | 2.1/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.8/100 |
| PM1 (ultrafine particles) | Good | 6.4/100 |
Local Environmental Conditions
Harbison Canyon lies in a lightly developed area, where local traffic adds relatively little to air pollution. In this dry landscape, strong winds readily lift dust and sand into the air. Trees nearby help filter some particles from the air, though in hot weather they also emit compounds that feed ozone formation. Pollution carried in from the wider region can also raise levels at times.
In the mildest months, January to March, calmer nights at around 11°C allow traffic pollution to build up near the ground. Later in the year, ozone is the main concern from June to September, when sunny days averaging 26°C turn traffic and other emissions into ozone by mid-afternoon. Wildfire smoke is most likely from May to October, sometimes turning the sky hazy for days.
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Frequently Asked Questions About Air Quality in California
Is air quality bad in Harbison Canyon right now?
On 6 October 2026, overall air quality in Harbison Canyon is poor. AQI is the main air quality indicator at 62.9/100. Pollution peaks around 9:00 AM (PM10: 62.9/100).
Will air quality be worse tomorrow in Harbison Canyon?
On 7 October 2026, air quality conditions in Harbison Canyon will be similar to today, with AQI forecast at poor at 61.7/100. Pollution peaks around 9:00 AM (PM10: 61.7/100).
When is air pollution at its worst in Harbison Canyon?
In the mildest months, January to March, calmer nights at around 11°C allow traffic pollution to build up near the ground. Later in the year, ozone is the main concern from June to September, when sunny days averaging 26°C turn traffic and other emissions into ozone by mid-afternoon. Wildfire smoke is most likely from May to October, sometimes turning the sky hazy for days.
Are air quality levels in Harbison Canyon 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. |