Worst air pollution Stade Marcel-Deflandre - La Rochelle, today and tomorrow
Today (9 August): Air quality in Stade Marcel-Deflandre is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 37.1/100).
Tomorrow (10 August 2026): Air quality in Stade Marcel-Deflandre is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 36.0/100). Airmine updates local air quality forecasts four times daily.
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At Stade Marcel-Deflandre, port traffic and light industry is the main local source affecting air quality, though Atlantic westerlies ventilate the region regularly, which usually keeps pollution from building up. Cold winter inversions can trap emissions inland, while summer coastal breezes keep the coastline cleaner than areas further inland, barring the odd heatwave ozone spike.
Today - 9 August | Pollution peaks at 15:00
AQI:
Fair
37.1/100
PM2.5 (fine particles):
Good
8.3/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Good
8.2/100
O3 (ozone):
Fair
37.1/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.1/100
PM1 (ultrafine particles):
Good
5.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
9.1/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
11.5/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Good
6.7/100
Sports venues in La Rochelle
Frequently Asked Questions
Is air quality bad in Stade Marcel-Deflandre right now?
On 9 August 2026, overall air quality in Stade Marcel-Deflandre is fair. AQI is the main air quality indicator at 37.1/100. Pollution peaks around 3:00 PM (O3: 37.1/100).
Will air quality be worse tomorrow in Stade Marcel-Deflandre?
On 10 August 2026, air quality conditions in Stade Marcel-Deflandre will be similar to today, with AQI forecast at fair at 36.0/100. Pollution peaks around 5:00 PM (O3: 36.0/100).
When is air pollution at its worst in Stade Marcel-Deflandre?
At Stade Marcel-Deflandre, the combination of oak and plane pollen and port traffic and light industry is what most affects sensitive visitors, typically in spring; Atlantic westerlies ventilate the region regularly.
Are air quality levels in Stade Marcel-Deflandre 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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