Worst air pollution Neuilly-sur-Seine, today and tomorrow
Today (20 September): Air quality in Neuilly-sur-Seine is fair. AQI, PM2.5, NO2, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 10:00 AM (NO2: 33.6/100).
Tomorrow (21 September 2026): Air quality in Neuilly-sur-Seine is moderate. AQI worsens to moderate; PM10 increases to fair; NO2 increases to moderate; O3 increases to moderate; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 44.3/100). Airmine updates local air quality forecasts four times daily.
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Neuilly-sur-Seine's air quality reflects Greater Paris' most affluent inner western suburb adjacent to the Bois de Boulogne, with vehicle traffic on the A86 and Boulevard du Général de Gaulle generating sustained NO₂ alongside the dense residential and financial character of one of France's wealthiest communities. The Bois de Boulogne's substantial woodland to the east provides a meaningful local clean-air buffer, while prevailing westerlies carry Atlantic air through the Paris basin and the park proximity provides relatively better conditions than many inner Paris districts.
Today - 20 September | Pollution peaks at 10:00
AQI:
Fair
33.6/100
PM2.5 (fine particles):
Fair
22.7/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Fair
33.6/100
O3 (ozone):
Fair
21.1/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
11.8/100
PM1 (ultrafine particles):
Fair
24.0/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 10:00
AQI:
Moderate
44.3/100
PM2.5 (fine particles):
Fair
24.6/100
PM10 (coarse particles):
Fair
20.7/100
NO2 (nitrogen dioxide):
Moderate
44.3/100
O3 (ozone):
Moderate
42.7/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
14.5/100
PM1 (ultrafine particles):
Fair
28.8/100
Pollen forecast in Neuilly-sur-Seine
View pollen forecastFrequently Asked Questions
Is air quality bad in Neuilly-sur-Seine right now?
On 20 September 2026, overall air quality in Neuilly-sur-Seine is fair. AQI is the main air quality indicator at 33.6/100. Pollution peaks around 10:00 AM (NO2: 33.6/100).
Will air quality be worse tomorrow in Neuilly-sur-Seine?
On 21 September 2026, air quality conditions in Neuilly-sur-Seine will be worse than today, with AQI forecast at moderate at 44.3/100. Pollution peaks around 10:00 AM (NO2: 44.3/100).
When is air pollution at its worst in Neuilly-sur-Seine?
Neuilly-sur-Seine's toughest days for allergy and air quality sufferers alike are usually calm, dry ones when agricultural traffic and river-valley industry overlap with the oak and plane pollen peak; the wide Loire valley allows steady airflow, offering fairly regular relief. Nearby Loire valley cereal farmland and vineyards add a further seasonal factor.
Are air quality levels in Neuilly-sur-Seine 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.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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