Worst air pollution La Défense - Paris, today and tomorrow
Today (16 July): Air quality in La Défense is poor. AQI and O3 are poor; NO2 and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 63.6/100).
Tomorrow (17 July 2026): Air quality in La Défense is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 59.7/100). 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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Paris's La Défense business district records elevated NO₂ from concentrated commuter traffic and its position downwind of the Paris urban core, though the open tower district geometry aids dispersal compared to enclosed street canyons. Readings improve significantly at weekends when office traffic drops sharply.
Today - 16 July | Pollution peaks at 16:00
AQI:
Poor
63.6/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Fair
20.9/100
O3 (ozone):
Poor
63.6/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.1/100
PM1 (ultrafine particles):
Fair
21.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
59.7/100
PM2.5 (fine particles):
Good
19.7/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Fair
24.9/100
O3 (ozone):
Medium
59.7/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
19.0/100
PM1 (ultrafine particles):
Fair
25.1/100
Other Landmarks in Paris
Sports venues in Paris
Frequently Asked Questions
Is air quality bad in La Défense right now?
On 16 July 2026, overall air quality in La Défense is poor. AQI is the main air quality indicator at 63.6/100. Pollution peaks around 4:00 PM (O3: 63.6/100).
Will air quality be worse tomorrow in La Défense?
On 17 July 2026, air quality conditions in La Défense will be better than today, with PM1 forecast at fair at 25.1/100. Pollution peaks around 1:00 PM (O3: 59.7/100).
When is air pollution at its worst in La Défense?
La Défense, within Paris, sees its worst combined pollen and air quality days when traffic and urban heating coincide with the spring birch and plane peak; the Seine corridor channels westerly winds through the city.
Are air quality levels in La Défense 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?
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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