Worst air pollution Maisons-Alfort, today and tomorrow
Today (9 August): Air quality in Maisons-Alfort 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 Maisons-Alfort 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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Maisons-Alfort's air quality reflects Greater Paris' southeastern inner suburb on the Marne-Seine confluence, with vehicle traffic on the A4 and surrounding mixed residential and veterinary research character generating elevated NOₓ. The Marne-Seine confluence provides limited ventilation, while prevailing westerlies carry the broader Paris metropolitan pollution eastward and the dense urban industrial-residential character maintains consistent moderate to elevated readings in this major inner Paris commuter suburb throughout the year.
Today - 9 August | Pollution peaks at 13:00
AQI:
Medium
45.0/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
7.0/100
NO2 (nitrogen dioxide):
Good
13.5/100
O3 (ozone):
Medium
45.0/100
SO2 (sulfur dioxide):
Good
2.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.7/100
PM1 (ultrafine particles):
Good
13.2/100
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
8.1/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
8.4/100
O3 (ozone):
Fair
37.4/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
7.3/100
Pollen forecast in Maisons-Alfort
View pollen forecastFrequently Asked Questions
Is air quality bad in Maisons-Alfort right now?
On 9 August 2026, overall air quality in Maisons-Alfort 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 Maisons-Alfort?
On 10 August 2026, air quality conditions in Maisons-Alfort 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 Maisons-Alfort?
In Maisons-Alfort, the worst combined pollen and air quality days tend to come when agricultural traffic and river-valley industry coincide with the peak oak and plane pollen season in spring; the wide Loire valley allows steady airflow, so conditions usually improve within a day or two.
Are air quality levels in Maisons-Alfort 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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