Worst air pollution Le Mans, today and tomorrow
Today (16 July): Air quality in Le Mans is fair. PM1 is fair; AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 1:00 AM (NO2: 48.3/100).
Tomorrow (17 July 2026): Air quality in Le Mans is fair. NO2 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 43.0/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Le Mans' air quality reflects its position in the Sarthe valley in the Maine region, with vehicle traffic on the A11 and the concentrated motorsport industry around the Circuit de la Sarthe — generating significant racing event vehicle emissions — alongside the surrounding automotive and parts manufacturing industry. Atlantic westerlies from the Loire Valley generally provide reasonable ventilation, while the flat Sarthe plain allows good dispersal on most days and the automotive character makes vehicular NOₓ the dominant year-round emission source.
Today - 16 July | Pollution peaks at 01:00
AQI:
Medium
48.3/100
PM2.5 (fine particles):
Good
18.2/100
PM10 (coarse particles):
Good
6.1/100
NO2 (nitrogen dioxide):
Medium
48.3/100
O3 (ozone):
Medium
45.0/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.8/100
PM1 (ultrafine particles):
Fair
21.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
43.0/100
PM2.5 (fine particles):
Good
12.8/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Fair
37.6/100
O3 (ozone):
Medium
43.0/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
16.2/100
Pollen forecast in Le Mans
View pollen forecastSports venues in Le Mans
Frequently Asked Questions
Is air quality bad in Le Mans right now?
On 16 July 2026, overall air quality in Le Mans is fair. PM1 is the main pollutant at 21.8/100. Pollution peaks around 1:00 AM (NO2: 48.3/100).
Will air quality be worse tomorrow in Le Mans?
On 17 July 2026, air quality conditions in Le Mans will be similar to today, with NO2 forecast at fair at 37.6/100. Pollution peaks around 3:00 PM (O3: 43.0/100).
When is air pollution at its worst in Le Mans?
In Le Mans, allergy sufferers and those sensitive to pollution both notice more symptoms when river-port traffic and light industry coincides with heavy oak and plane pollen; the Loire estuary and Atlantic winds ventilate the area, keeping bad spells relatively short. Nearby Loire valley and Vendee farmland add a further seasonal factor.
Are air quality levels in Le Mans 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