Worst air pollution Carcassonne, today and tomorrow
Today (9 August): Air quality in Carcassonne is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 38.9/100).
Tomorrow (10 August 2026): Air quality in Carcassonne is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 31.9/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
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 - 9 August | Pollution peaks at 17:00
AQI:
Fair
38.9/100
PM2.5 (fine particles):
Good
10.7/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Fair
22.9/100
O3 (ozone):
Fair
38.9/100
SO2 (sulfur dioxide):
Good
4.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.2/100
PM1 (ultrafine particles):
Good
7.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Fair
31.9/100
PM2.5 (fine particles):
Good
9.1/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Fair
26.3/100
O3 (ozone):
Fair
31.9/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.8/100
PM1 (ultrafine particles):
Good
8.2/100
Pollen forecast in Carcassonne
View pollen forecastFrequently Asked Questions
Is air quality bad in Carcassonne right now?
On 9 August 2026, overall air quality in Carcassonne is fair. AQI is the main air quality indicator at 38.9/100. Pollution peaks around 5:00 PM (O3: 38.9/100).
Will air quality be worse tomorrow in Carcassonne?
On 10 August 2026, air quality conditions in Carcassonne will be similar to today, with AQI forecast at fair at 31.9/100. Pollution peaks around 5:00 PM (O3: 31.9/100).
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.
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.
Want to see air quality forecasts for other cities in France?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.