Lake Nacimiento Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Lake Nacimiento is poor. AQI and NO2 are poor; PM2.5 and PM10 are moderate; PM1 is fair; O3, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (NO2: 62.8/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Lake Nacimiento is poor. All pollutants stay as today. Pollution peaks around 3:00 PM (NO2: 64.4/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Poor | 62.8/100 |
| PM2.5 (fine particles) | Moderate | 59.0/100 |
| PM10 (coarse particles) | Moderate | 45.3/100 |
| NO2 (nitrogen dioxide) | Poor | 62.8/100 |
| O3 (ozone) | Good | 19.8/100 |
| SO2 (sulfur dioxide) | Good | 7.0/100 |
| CO (carbon monoxide) | Good | 0.7/100 |
| HCHO (formaldehyde) | Good | 5.1/100 |
| PM1 (ultrafine particles) | Fair | 25.4/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Poor | 64.4/100 |
| PM2.5 (fine particles) | Moderate | 54.5/100 |
| PM10 (coarse particles) | Moderate | 46.9/100 |
| NO2 (nitrogen dioxide) | Poor | 64.4/100 |
| O3 (ozone) | Good | 19.5/100 |
| SO2 (sulfur dioxide) | Good | 4.9/100 |
| CO (carbon monoxide) | Good | 0.7/100 |
| HCHO (formaldehyde) | Good | 4.1/100 |
| PM1 (ultrafine particles) | Fair | 23.6/100 |
Local Environmental Conditions
Lake Nacimiento 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. Open water nearby lets breezes move freely across the area, helping to disperse pollutants. Pollution carried in from the wider region can also raise levels at times.
Air near roads is often at its worst from January to March, when nights cool to around 12°C and the air turns still. With summer temperatures averaging only about 18°C, ozone rarely becomes a serious problem. The dry months, April to October, bring more dust whenever the wind picks up. From June to October, 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 Lake Nacimiento right now?
On 6 October 2026, overall air quality in Lake Nacimiento is poor. AQI is the main air quality indicator at 62.8/100. Pollution peaks around 1:00 PM (NO2: 62.8/100).
Will air quality be worse tomorrow in Lake Nacimiento?
On 7 October 2026, air quality conditions in Lake Nacimiento will be similar to today, with AQI forecast at poor at 64.4/100. Pollution peaks around 3:00 PM (NO2: 64.4/100).
When is air pollution at its worst in Lake Nacimiento?
Air near roads is often at its worst from January to March, when nights cool to around 12°C and the air turns still. With summer temperatures averaging only about 18°C, ozone rarely becomes a serious problem. The dry months, April to October, bring more dust whenever the wind picks up. From June to October, dry weather raises the risk of wildfires, and their smoke can cover the area in haze.
Are air quality levels in Lake Nacimiento 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. |