Worst air pollution Lac d'Annecy Regatta Centre - Annecy, today and tomorrow
Today (20 September): Air quality in Lac d'Annecy Regatta Centre is moderate. AQI, PM2.5, and NO2 are moderate; PM10, O3, and PM1 are fair; SO2, CO, and HCHO are good. Pollution peaks around 8:00 AM (NO2: 41.0/100).
Tomorrow (21 September 2026): Air quality in Lac d'Annecy Regatta Centre is fair. AQI improves to fair; PM2.5 decreases to fair; PM10 decreases to good; NO2 decreases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 28.2/100). Airmine updates local air quality forecasts four times daily.
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Lac d'Annecy Regatta Centre sees air quality driven largely by valley motorway traffic and light industry, while mountain valley winds alternate with calm temperature inversions, helping maintain reasonable conditions across the year. Winter is typically the worst season, as cold air settles in the valleys and traps traffic and heating emissions for days at a time; summer sees better dispersion but occasional ozone build-up in the lower valleys.
Today - 20 September | Pollution peaks at 08:00
AQI:
Moderate
41.0/100
PM2.5 (fine particles):
Moderate
40.5/100
PM10 (coarse particles):
Fair
22.1/100
NO2 (nitrogen dioxide):
Moderate
41.0/100
O3 (ozone):
Fair
32.6/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
1.0/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Fair
21.4/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 17:00
AQI:
Fair
28.2/100
PM2.5 (fine particles):
Fair
24.6/100
PM10 (coarse particles):
Good
14.8/100
NO2 (nitrogen dioxide):
Fair
22.7/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
9.5/100
Sports venues in Annecy
Frequently Asked Questions
Is air quality bad in Lac d'Annecy Regatta Centre right now?
On 20 September 2026, overall air quality in Lac d'Annecy Regatta Centre is moderate. AQI is the main air quality indicator at 41.0/100. Pollution peaks around 8:00 AM (NO2: 41.0/100).
Will air quality be worse tomorrow in Lac d'Annecy Regatta Centre?
On 21 September 2026, air quality conditions in Lac d'Annecy Regatta Centre will be better than today, with AQI forecast at fair at 28.2/100. Pollution peaks around 5:00 PM (O3: 28.2/100).
When is air pollution at its worst in Lac d'Annecy Regatta Centre?
Lac d'Annecy Regatta Centre is toughest for allergy sufferers when birch and oak pollen peaks and valley motorway traffic and light industry coincide; mountain valley winds alternate with calm temperature inversions, so it doesn't usually last. The presence of alpine valley pasture and orchards in the area adds another layer to the local pattern.
Are air quality levels in Lac d'Annecy Regatta Centre 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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