Worst air pollution Boulogne-Billancourt, today and tomorrow
Today (16 July): Air quality in Boulogne-Billancourt is poor. AQI and O3 are poor; NO2 and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 63.6/100).
Tomorrow (17 July 2026): Air quality in Boulogne-Billancourt is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 59.7/100). 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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Boulogne-Billancourt's air quality reflects Greater Paris' inner western suburbs, with the Boulevard Périphérique and A13 motorway generating sustained NO₂ alongside the dense urban character. The Seine corridor provides limited ventilation, while prevailing westerlies carry Atlantic air through the Paris basin and the motorway exposure keeps readings consistently above the central Paris residential average.
Today - 16 July | Pollution peaks at 16:00
AQI:
Poor
63.6/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Fair
20.8/100
O3 (ozone):
Poor
63.6/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.1/100
PM1 (ultrafine particles):
Fair
21.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
59.7/100
PM2.5 (fine particles):
Good
19.7/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Fair
24.8/100
O3 (ozone):
Medium
59.7/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
19.0/100
PM1 (ultrafine particles):
Fair
25.1/100
Pollen forecast in Boulogne-Billancourt
View pollen forecastFrequently Asked Questions
Is air quality bad in Boulogne-Billancourt right now?
On 16 July 2026, overall air quality in Boulogne-Billancourt is poor. AQI is the main air quality indicator at 63.6/100. Pollution peaks around 4:00 PM (O3: 63.6/100).
Will air quality be worse tomorrow in Boulogne-Billancourt?
On 17 July 2026, air quality conditions in Boulogne-Billancourt will be better than today, with PM1 forecast at fair at 25.1/100. Pollution peaks around 1:00 PM (O3: 59.7/100).
When is air pollution at its worst in Boulogne-Billancourt?
Boulogne-Billancourt'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. The presence of Loire valley cereal farmland and vineyards in the area adds another layer to the local pattern.
Are air quality levels in Boulogne-Billancourt 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