Worst air pollution La Roche-sur-Yon, today and tomorrow
Today (16 July): Air quality in La Roche-sur-Yon is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 48.7/100).
Tomorrow (17 July 2026): Air quality in La Roche-sur-Yon is fair. AQI worsens to fair; NO2 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 34.1/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
La Roche-sur-Yon's air quality benefits from the flat Vendée bocage landscape, with consistent Atlantic westerlies from the nearby Loire-Atlantique coast providing reliable ventilation. Vehicle traffic on the A83 motorway and the surrounding agri-food and manufacturing industry contribute local sources, while the flat western French landscape and the Atlantic coastal proximity generally maintain La Roche-sur-Yon among France's more moderate western regional capital environments throughout most of the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Good
12.8/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Fair
20.3/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.4/100
PM1 (ultrafine particles):
Good
15.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 17:00
AQI:
Fair
34.1/100
PM2.5 (fine particles):
Good
8.5/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
13.0/100
O3 (ozone):
Fair
34.1/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
10.4/100
Pollen forecast in La Roche-sur-Yon
View pollen forecastFrequently Asked Questions
Is air quality bad in La Roche-sur-Yon right now?
On 16 July 2026, overall air quality in La Roche-sur-Yon is fair. NO2 is the main pollutant at 20.3/100. Pollution peaks around 12:00 PM (O3: 48.7/100).
Will air quality be worse tomorrow in La Roche-sur-Yon?
On 17 July 2026, air quality conditions in La Roche-sur-Yon will be similar to today, with AQI forecast at fair at 34.1/100. Pollution peaks around 5:00 PM (O3: 34.1/100).
When is air pollution at its worst in La Roche-sur-Yon?
The days that hit sensitive groups hardest in La Roche-sur-Yon are calm spring ones, when river-port traffic and light industry and the oak and plane pollen peak overlap; the Loire estuary and Atlantic winds ventilate the area, so relief usually isn't far behind.
Are air quality levels in La Roche-sur-Yon 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.
Want to see air quality forecasts for other cities in France?
Check air quality in other popular cities:
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