Worst air pollution Épinay-sur-Seine, today and tomorrow
Today (9 August): Air quality in Épinay-sur-Seine is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 45.0/100).
Tomorrow (10 August 2026): Air quality in Épinay-sur-Seine is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 37.4/100). Airmine updates local air quality forecasts four times daily.
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Épinay-sur-Seine's air quality reflects Greater Paris' northern inner industrial suburb on the Seine, with the A15 motorway and surrounding industrial and logistics corridor generating elevated NOₓ and PM2.5 alongside the dense urban residential character. The Seine river provides limited ventilation, while prevailing westerlies carry the broader Paris metropolitan pollution northward and the industrial waterfront character maintains readings consistently among the higher values in the greater Paris northern industrial corridor throughout the year.
Today - 9 August | Pollution peaks at 13:00
AQI:
Medium
45.0/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
6.8/100
NO2 (nitrogen dioxide):
Good
11.2/100
O3 (ozone):
Medium
45.0/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.7/100
PM1 (ultrafine particles):
Good
12.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 13:00
AQI:
Fair
37.4/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
7.0/100
O3 (ozone):
Fair
37.4/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
7.0/100
Pollen forecast in Épinay-sur-Seine
View pollen forecastFrequently Asked Questions
Is air quality bad in Épinay-sur-Seine right now?
On 9 August 2026, overall air quality in Épinay-sur-Seine is medium. AQI is the main air quality indicator at 45.0/100. Pollution peaks around 1:00 PM (O3: 45.0/100).
Will air quality be worse tomorrow in Épinay-sur-Seine?
On 10 August 2026, air quality conditions in Épinay-sur-Seine will be worse than today, with AQI forecast at fair at 37.4/100. Pollution peaks around 1:00 PM (O3: 37.4/100).
When is air pollution at its worst in Épinay-sur-Seine?
In Épinay-sur-Seine, the combination of agricultural traffic and river-valley industry and heavy oak and plane pollen in spring is what most affects sensitive groups; the wide Loire valley allows steady airflow, so poor conditions rarely last more than a couple of days.
Are air quality levels in Épinay-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: 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.
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