Worst air pollution Stade Francis-Le Ble - Brest, today and tomorrow
Today (9 August): Air quality in Stade Francis-Le Ble is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 31.0/100).
Tomorrow (10 August 2026): Air quality in Stade Francis-Le Ble is fair. All pollutants stay as today. Pollution peaks around 7:00 PM (O3: 27.8/100). Airmine updates local air quality forecasts four times daily.
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At Stade Francis-Le Ble, fishing-port and coastal traffic is the main local source affecting air quality, though Atlantic sea breezes ventilate the coast reliably, which usually keeps pollution from building up. Steady Atlantic winds keep air quality good in almost every season, and even summer rarely sees the pollution build-up common further inland.
Today - 9 August | Pollution peaks at 12:00
AQI:
Fair
31.0/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
9.3/100
NO2 (nitrogen dioxide):
Good
16.6/100
O3 (ozone):
Fair
31.0/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Good
10.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 19:00
AQI:
Fair
27.8/100
PM2.5 (fine particles):
Good
5.8/100
PM10 (coarse particles):
Good
2.1/100
NO2 (nitrogen dioxide):
Good
6.1/100
O3 (ozone):
Fair
27.8/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
4.3/100
Sports venues in Brest
Frequently Asked Questions
Is air quality bad in Stade Francis-Le Ble right now?
On 9 August 2026, overall air quality in Stade Francis-Le Ble is fair. AQI is the main air quality indicator at 31.0/100. Pollution peaks around 12:00 PM (O3: 31.0/100).
Will air quality be worse tomorrow in Stade Francis-Le Ble?
On 10 August 2026, air quality conditions in Stade Francis-Le Ble will be similar to today, with AQI forecast at fair at 27.8/100. Pollution peaks around 7:00 PM (O3: 27.8/100).
When is air pollution at its worst in Stade Francis-Le Ble?
Stade Francis-Le Ble is toughest for allergy sufferers when birch and oak pollen peaks and fishing-port and coastal traffic coincide; Atlantic sea breezes ventilate the coast reliably, so it doesn't usually last. The presence of Breton dairy pasture and coastal farmland in the area adds another layer to the local pattern.
Are air quality levels in Stade Francis-Le Ble 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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