Keller Peak Yellow Post #5, Running Springs Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Keller Peak Yellow Post #5 is moderate. AQI, PM2.5, and PM10 are moderate; NO2 and O3 are fair; SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (PM10: 46.9/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Keller Peak Yellow Post #5 is moderate. All pollutants stay as today. Pollution peaks around 10:00 AM (PM10: 52.2/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 46.9/100 |
| PM2.5 (fine particles) | Moderate | 40.3/100 |
| PM10 (coarse particles) | Moderate | 46.9/100 |
| NO2 (nitrogen dioxide) | Fair | 24.0/100 |
| O3 (ozone) | Fair | 26.4/100 |
| SO2 (sulfur dioxide) | Good | 1.2/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.9/100 |
| PM1 (ultrafine particles) | Good | 2.4/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 52.2/100 |
| PM2.5 (fine particles) | Moderate | 42.4/100 |
| PM10 (coarse particles) | Moderate | 52.2/100 |
| NO2 (nitrogen dioxide) | Fair | 25.0/100 |
| O3 (ozone) | Fair | 26.6/100 |
| SO2 (sulfur dioxide) | Good | 3.5/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 2.5/100 |
| PM1 (ultrafine particles) | Good | 9.3/100 |
Local Environmental Conditions
Around this location in Running Springs, traffic is light and there are few concentrated sources of air pollution. Bare and dry ground means wind-blown dust can push up coarse particle levels on windy days. The surrounding woodland releases natural compounds that, in warm sunny weather, help form ozone. Pollution carried in from the wider region can also raise levels at times.
From January to February, temperatures near 8°C let smoke and particles from wood burning and traffic build up, especially on cold, still mornings. By contrast, warm, sunny weather from June to September, around 29°C at its peak, raises afternoon ozone levels. From May to October, hot, dry weather raises the risk of wildfires, and their smoke can cover the area in haze.
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Frequently Asked Questions About Air Quality in California
Is air quality bad in Keller Peak Yellow Post #5 right now?
On 6 October 2026, overall air quality in Keller Peak Yellow Post #5 is moderate. AQI is the main air quality indicator at 46.9/100. Pollution peaks around 4:00 PM (PM10: 46.9/100).
Will air quality be worse tomorrow in Keller Peak Yellow Post #5?
On 7 October 2026, air quality conditions in Keller Peak Yellow Post #5 will be similar to today, with AQI forecast at moderate at 52.2/100. Pollution peaks around 10:00 AM (PM10: 52.2/100).
When is air pollution at its worst in Keller Peak Yellow Post #5?
From January to February, temperatures near 8°C let smoke and particles from wood burning and traffic build up, especially on cold, still mornings. By contrast, warm, sunny weather from June to September, around 29°C at its peak, raises afternoon ozone levels. From May to October, hot, dry weather raises the risk of wildfires, and their smoke can cover the area in haze.
Are air quality levels in Keller Peak Yellow Post #5 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. |