Worst air pollution Groupama Stadium - Lyon, today and tomorrow
Today (9 August): Air quality in Groupama Stadium is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 36.1/100).
Tomorrow (10 August 2026): Air quality in Groupama Stadium is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 47.3/100). Airmine updates local air quality forecasts four times daily.
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Groupama Stadium 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 - 9 August | Pollution peaks at 13:00
AQI:
Fair
36.1/100
PM2.5 (fine particles):
Good
6.9/100
PM10 (coarse particles):
Good
1.9/100
NO2 (nitrogen dioxide):
Fair
29.2/100
O3 (ozone):
Fair
36.1/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
18.6/100
PM1 (ultrafine particles):
Good
9.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 16:00
AQI:
Medium
47.3/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Fair
26.8/100
O3 (ozone):
Medium
47.3/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.9/100
PM1 (ultrafine particles):
Good
9.8/100
Other Landmarks in Lyon
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Frequently Asked Questions
Is air quality bad in Groupama Stadium right now?
On 9 August 2026, overall air quality in Groupama Stadium is fair. AQI is the main air quality indicator at 36.1/100. Pollution peaks around 1:00 PM (O3: 36.1/100).
Will air quality be worse tomorrow in Groupama Stadium?
On 10 August 2026, air quality conditions in Groupama Stadium will be similar to today, with NO2 forecast at fair at 26.8/100. Pollution peaks around 4:00 PM (O3: 47.3/100).
When is air pollution at its worst in Groupama Stadium?
Groupama Stadium sees its most challenging days when birch and oak pollen peaks coincide with valley motorway traffic and light industry; mountain valley winds alternate with calm temperature inversions, generally bringing conditions back to normal quickly.
Are air quality levels in Groupama Stadium 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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