Vallecito Western Mine, Angels Camp Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Vallecito Western Mine is moderate. AQI, PM2.5, and PM10 are moderate; O3 is fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (PM10: 44.8/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Vallecito Western Mine is moderate. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (PM2.5: 44.6/100).
Explore Forecasts
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 44.8/100 |
| PM2.5 (fine particles) | Moderate | 41.5/100 |
| PM10 (coarse particles) | Moderate | 44.8/100 |
| NO2 (nitrogen dioxide) | Good | 10.5/100 |
| O3 (ozone) | Fair | 32.4/100 |
| SO2 (sulfur dioxide) | Good | 1.6/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 2.8/100 |
| PM1 (ultrafine particles) | Good | 9.9/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 44.6/100 |
| PM2.5 (fine particles) | Moderate | 44.6/100 |
| PM10 (coarse particles) | Moderate | 43.8/100 |
| NO2 (nitrogen dioxide) | Fair | 21.8/100 |
| O3 (ozone) | Fair | 33.3/100 |
| SO2 (sulfur dioxide) | Good | 1.7/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 3.5/100 |
| PM1 (ultrafine particles) | Good | 13.0/100 |
Local Environmental Conditions
Around this part of Angels Camp, traffic is light and there are few concentrated sources of air pollution. 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. Pollution carried in from the wider region can also raise levels at times.
The cooler months, November to March, see more fine particles, as wood burning and traffic add emissions while frequent calm, cold mornings around 2°C keep pollution near the ground. Hot afternoons from June to August, averaging 24°C in the warmest month, are when ozone is most likely to build up.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Air quality forecast neighborhoods 2 neighborhoods
Frequently Asked Questions About Air Quality in California
Is air quality bad in Vallecito Western Mine right now?
On 6 October 2026, overall air quality in Vallecito Western Mine is moderate. AQI is the main air quality indicator at 44.8/100. Pollution peaks around 10:00 AM (PM10: 44.8/100).
Will air quality be worse tomorrow in Vallecito Western Mine?
On 7 October 2026, air quality conditions in Vallecito Western Mine will be similar to today, with AQI forecast at moderate at 44.6/100. Pollution peaks around 11:00 AM (PM2.5: 44.6/100).
When is air pollution at its worst in Vallecito Western Mine?
The cooler months, November to March, see more fine particles, as wood burning and traffic add emissions while frequent calm, cold mornings around 2°C keep pollution near the ground. Hot afternoons from June to August, averaging 24°C in the warmest month, are when ozone is most likely to build up.
Are air quality levels in Vallecito Western Mine 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. |