Worst air pollution Chelles, today and tomorrow
Today (16 July): Air quality in Chelles is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 58.8/100).
Tomorrow (17 July 2026): Air quality in Chelles is fair. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 59.8/100). 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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Chelles' air quality reflects Greater Paris' eastern inner suburb on the Marne river, with vehicle traffic on the A4 and A104 motorways and the surrounding residential and commercial character generating elevated NOₓ. The Marne river corridor provides limited ventilation, while prevailing westerlies carry the broader Paris metropolitan pollution eastward through the Marne valley and the dense suburban character maintains consistent moderate to elevated readings throughout the year.
Today - 16 July | Pollution peaks at 17:00
AQI:
Medium
58.8/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
6.0/100
O3 (ozone):
Medium
58.8/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.1/100
PM1 (ultrafine particles):
Good
18.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Medium
59.8/100
PM2.5 (fine particles):
Good
19.5/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Good
9.1/100
O3 (ozone):
Medium
59.8/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.5/100
PM1 (ultrafine particles):
Fair
24.6/100
Pollen forecast in Chelles
View pollen forecastFrequently Asked Questions
Is air quality bad in Chelles right now?
On 16 July 2026, overall air quality in Chelles is medium. AQI is the main air quality indicator at 58.8/100. Pollution peaks around 5:00 PM (O3: 58.8/100).
Will air quality be worse tomorrow in Chelles?
On 17 July 2026, air quality conditions in Chelles will be worse than today, with PM1 forecast at fair at 24.6/100. Pollution peaks around 2:00 PM (O3: 59.8/100).
When is air pollution at its worst in Chelles?
In Chelles, 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 Chelles 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.
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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