Worst air pollution Parc de Saint-Cloud - Paris, today and tomorrow
Today (20 September): Air quality in Parc de Saint-Cloud is fair. AQI, PM2.5, NO2, and PM1 are fair; PM10, O3, SO2, CO, and HCHO are good. Pollution peaks around 10:00 AM (NO2: 25.5/100).
Tomorrow (21 September 2026): Air quality in Parc de Saint-Cloud is fair. PM10 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 37.2/100). Airmine updates local air quality forecasts four times daily.
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Paris's Parc de Saint-Cloud and the Seine valley below benefit from the park's elevated position above the western Paris suburbs, with cleaner air than the urban core and good westerly ventilation from the open Île-de-France countryside. Readings here are consistently below central Paris averages.
Today - 20 September | Pollution peaks at 10:00
AQI:
Fair
25.5/100
PM2.5 (fine particles):
Fair
21.6/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Fair
25.5/100
O3 (ozone):
Good
19.0/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
11.8/100
PM1 (ultrafine particles):
Fair
25.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 10:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Fair
23.5/100
PM10 (coarse particles):
Fair
20.7/100
NO2 (nitrogen dioxide):
Fair
37.2/100
O3 (ozone):
Fair
37.1/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
14.5/100
PM1 (ultrafine particles):
Fair
30.3/100
Other Landmarks in Paris
Sports venues in Paris
Frequently Asked Questions
Is air quality bad in Parc de Saint-Cloud right now?
On 20 September 2026, overall air quality in Parc de Saint-Cloud is fair. AQI is the main air quality indicator at 25.5/100. Pollution peaks around 10:00 AM (NO2: 25.5/100).
Will air quality be worse tomorrow in Parc de Saint-Cloud?
On 21 September 2026, air quality conditions in Parc de Saint-Cloud will be similar to today, with AQI forecast at fair at 37.2/100. Pollution peaks around 10:00 AM (NO2: 37.2/100).
When is air pollution at its worst in Parc de Saint-Cloud?
For those living in Parc de Saint-Cloud, part of Paris, spring days combining traffic and urban heating with heavy birch and plane pollen are the hardest; the Seine corridor channels westerly winds through the city, so it rarely lasts long. Nearby Île-de-France farmland add a further seasonal factor.
Are air quality levels in Parc de Saint-Cloud 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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