Worst air pollution Laguna Niguel, today and tomorrow
Today (9 August): Air quality in Laguna Niguel is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 23.9/100).
Tomorrow (10 August 2026): Air quality in Laguna Niguel is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 22.5/100). Airmine updates local air quality forecasts four times daily.
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Laguna Niguel's air quality benefits from its South Orange County coastal valley position receiving reliable Pacific sea breezes through the Aliso Canyon, with vehicle emissions from I-5 the primary local source. The Saddleback Mountains create topographic enclosure to the northeast, while the coastal proximity provides better ventilation than the deeper Los Angeles basin and Laguna Niguel's affluent residential and coastal canyon character generally maintains among Southern California's more moderate inland-coastal urban environments.
Today - 9 August | Pollution peaks at 04:00
AQI:
Fair
23.9/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
12.3/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
23.9/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
4.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 10:00
AQI:
Fair
22.5/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
11.6/100
NO2 (nitrogen dioxide):
Good
0.8/100
O3 (ozone):
Fair
22.5/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
5.1/100
Pollen forecast in Laguna Niguel
View pollen forecastFrequently Asked Questions
Is air quality bad in Laguna Niguel right now?
On 9 August 2026, overall air quality in Laguna Niguel is fair. AQI is the main air quality indicator at 23.9/100. Pollution peaks around 4:00 AM (O3: 23.9/100).
Will air quality be worse tomorrow in Laguna Niguel?
On 10 August 2026, air quality conditions in Laguna Niguel will be similar to today, with AQI forecast at fair at 22.5/100. Pollution peaks around 10:00 AM (O3: 22.5/100).
When is air pollution at its worst in Laguna Niguel?
Laguna Niguel's air quality follows a clear seasonal pattern. In short, winter typically brings the cleanest stretch, once occasional rain clears the basin, whereas hot, sunny summer conditions drive persistent ozone problems, compounded by wildfire smoke risk into early autumn. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Laguna Niguel 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.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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