Worst air pollution Bayonne, today and tomorrow
Today (16 July): Air quality in Bayonne is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 32.0/100).
Tomorrow (17 July 2026): Air quality in Bayonne is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 29.1/100). 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
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Bayonne's air quality in France reflects the Adour river estuary position in the Pays Basque at the Pyrenean Atlantic foothills, with vehicle traffic on the A63 motorway and the surrounding port and industrial character contributing local sources. Consistent Atlantic westerlies from the Bay of Biscay provide reliable maritime ventilation, while the surrounding Pyrenean foothills create topographic variation and the Atlantic coastal proximity generally maintains Bayonne among southwestern France's more moderate urban environments throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
32.0/100
PM2.5 (fine particles):
Good
8.4/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Good
9.0/100
O3 (ozone):
Fair
32.0/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
5.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
29.1/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
6.3/100
O3 (ozone):
Fair
29.1/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
4.6/100
Pollen forecast in Bayonne
View pollen forecastFrequently Asked Questions
Is air quality bad in Bayonne right now?
On 16 July 2026, overall air quality in Bayonne is fair. AQI is the main air quality indicator at 32.0/100. Pollution peaks around 4:00 PM (O3: 32.0/100).
Will air quality be worse tomorrow in Bayonne?
On 17 July 2026, air quality conditions in Bayonne will be similar to today, with AQI forecast at fair at 29.1/100. Pollution peaks around 2:00 PM (O3: 29.1/100).
When is air pollution at its worst in Bayonne?
In Bayonne, the worst combined pollen and air quality days tend to come when port traffic and light industry coincide with the peak oak and plane pollen season in spring; Atlantic westerlies ventilate the region regularly, so conditions usually improve within a day or two. The presence of vineyard land and the Landes pine forest in the area adds another layer to the local pattern.
Are air quality levels in Bayonne 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