Worst air pollution Le Blanc-Mesnil, today and tomorrow
Today (20 September): Air quality in Le Blanc-Mesnil is fair. AQI, PM2.5, and NO2 are fair; PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM2.5: 29.0/100).
Tomorrow (21 September 2026): Air quality in Le Blanc-Mesnil is fair. PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 37.9/100). Airmine updates local air quality forecasts four times daily.
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Le Blanc-Mesnil's air quality reflects Greater Paris' northeastern inner suburb adjacent to Le Bourget Airport, with aviation and vehicle emissions generating elevated NOₓ alongside vehicle traffic on the A1 motorway and the surrounding industrial and residential character. The flat Seine plain provides limited dispersal, while the airport's flight corridor and the industrial character make Le Blanc-Mesnil one of the Paris metropolitan area's more aviation and industrially influenced municipalities throughout the year.
Today - 20 September | Pollution peaks at 00:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Fair
29.0/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Fair
25.9/100
O3 (ozone):
Good
11.2/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
11.8/100
PM1 (ultrafine particles):
Good
6.9/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 10:00
AQI:
Fair
37.9/100
PM2.5 (fine particles):
Fair
31.5/100
PM10 (coarse particles):
Fair
20.7/100
NO2 (nitrogen dioxide):
Fair
37.9/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
14.5/100
PM1 (ultrafine particles):
Good
8.7/100
Pollen forecast in Le Blanc-Mesnil
View pollen forecastFrequently Asked Questions
Is air quality bad in Le Blanc-Mesnil right now?
On 20 September 2026, overall air quality in Le Blanc-Mesnil is fair. AQI is the main air quality indicator at 29.0/100. Pollution peaks around 12:00 AM (PM2.5: 29.0/100).
Will air quality be worse tomorrow in Le Blanc-Mesnil?
On 21 September 2026, air quality conditions in Le Blanc-Mesnil will be similar to today, with AQI forecast at fair at 37.9/100. Pollution peaks around 10:00 AM (NO2: 37.9/100).
When is air pollution at its worst in Le Blanc-Mesnil?
Le Blanc-Mesnil's toughest days for allergy and air quality sufferers alike are usually calm, dry ones when agricultural traffic and river-valley industry overlap with the oak and plane pollen peak; the wide Loire valley allows steady airflow, offering fairly regular relief.
Are air quality levels in Le Blanc-Mesnil 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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