Worst air pollution Carcassonne, today and tomorrow
Today (16 July): Air quality in Carcassonne is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 41.5/100).
Tomorrow (17 July 2026): Air quality in Carcassonne 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: 33.9/100). 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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Carcassonne's air quality is driven largely by tourist and motorway traffic, close to the Tarn, though the Tramontane wind provides periodic ventilation, limiting how much pollution can build up locally. Hot, calm summer spells bring the greatest risk of ozone build-up, while winter is typically cleaner thanks to more frequent Tramontane winds.
Today - 16 July | Pollution peaks at 16:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
10.1/100
NO2 (nitrogen dioxide):
Fair
20.8/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.6/100
PM1 (ultrafine particles):
Good
9.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 17:00
AQI:
Fair
33.9/100
PM2.5 (fine particles):
Good
9.5/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
13.6/100
O3 (ozone):
Fair
33.9/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Good
7.6/100
Pollen forecast in Carcassonne
View pollen forecastFrequently Asked Questions
Is air quality bad in Carcassonne right now?
On 16 July 2026, overall air quality in Carcassonne is fair. NO2 is the main pollutant at 20.8/100. Pollution peaks around 4:00 PM (O3: 41.5/100).
Will air quality be worse tomorrow in Carcassonne?
On 17 July 2026, air quality conditions in Carcassonne will be similar to today, with AQI forecast at fair at 33.9/100. Pollution peaks around 5:00 PM (O3: 33.9/100).
When is air pollution at its worst in Carcassonne?
In Carcassonne, allergy sufferers and those sensitive to pollution both notice more symptoms when tourist and motorway traffic coincides with heavy plane and oak pollen; the Tramontane wind provides periodic ventilation, keeping bad spells relatively short.
Are air quality levels in Carcassonne 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