Worst air pollution Vannes, today and tomorrow
Today (16 July): Air quality in Vannes is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 51.8/100).
Tomorrow (17 July 2026): Air quality in Vannes is medium. All pollutants stay as today. Pollution peaks around 4:00 PM (O3: 44.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Vannes' air quality benefits from its exceptional Brittany Atlantic and Gulf of Morbihan coastal position, with consistent powerful Atlantic westerlies providing reliable maritime ventilation across this historic Breton capital. Vehicle traffic on the N165 and surrounding services and light industry are the primary local sources, while the outstanding Atlantic and Gulf coastal exposure and the surrounding Breton countryside generally maintain Vannes among France's cleaner regional capital urban environments throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
11.8/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Good
14.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Medium
44.2/100
PM2.5 (fine particles):
Good
6.3/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
4.8/100
O3 (ozone):
Medium
44.2/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Good
7.9/100
Pollen forecast in Vannes
View pollen forecastFrequently Asked Questions
Is air quality bad in Vannes right now?
On 16 July 2026, overall air quality in Vannes is medium. AQI is the main air quality indicator at 51.8/100. Pollution peaks around 1:00 PM (O3: 51.8/100).
Will air quality be worse tomorrow in Vannes?
On 17 July 2026, air quality conditions in Vannes will be similar to today, with AQI forecast at medium at 44.2/100. Pollution peaks around 4:00 PM (O3: 44.2/100).
When is air pollution at its worst in Vannes?
Vannes's toughest days for allergy and air quality sufferers alike are usually calm, dry ones when fishing-port and coastal traffic overlap with the birch and oak pollen peak; Atlantic sea breezes ventilate the coast reliably, offering fairly regular relief. Nearby Breton dairy pasture and coastal farmland add a further seasonal factor.
Are air quality levels in Vannes 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app