Worst air pollution Boulogne-sur-Mer, today and tomorrow
Today (9 August): Air quality in Boulogne-sur-Mer is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 61.5/100).
Tomorrow (10 August 2026): Air quality in Boulogne-sur-Mer is fair. AQI improves to fair; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 28.2/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Boulogne-sur-Mer's air quality is driven largely by former coalfield industry and motorway traffic, close to the Scarpe, though North Sea winds sweep across the open plains, limiting how much pollution can build up locally. Winter can see particulate build-up during still, cold spells, while summer generally benefits from stronger regional winds, aside from occasional cross-border ozone episodes.
Today - 9 August | Pollution peaks at 19:00
AQI:
Poor
61.5/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
27.8/100
O3 (ozone):
Poor
61.5/100
SO2 (sulfur dioxide):
Good
3.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.2/100
PM1 (ultrafine particles):
Good
16.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Fair
28.2/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Fair
28.2/100
O3 (ozone):
Fair
28.0/100
SO2 (sulfur dioxide):
Good
3.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
7.1/100
Pollen forecast in Boulogne-sur-Mer
View pollen forecastFrequently Asked Questions
Is air quality bad in Boulogne-sur-Mer right now?
On 9 August 2026, overall air quality in Boulogne-sur-Mer is poor. AQI is the main air quality indicator at 61.5/100. Pollution peaks around 7:00 PM (O3: 61.5/100).
Will air quality be worse tomorrow in Boulogne-sur-Mer?
On 10 August 2026, air quality conditions in Boulogne-sur-Mer will be better than today, with AQI forecast at fair at 28.2/100. Pollution peaks around 12:00 AM (NO2: 28.2/100).
When is air pollution at its worst in Boulogne-sur-Mer?
For people sensitive to both pollen and pollution in Boulogne-sur-Mer, spring days combining former coalfield industry and motorway traffic with the birch and oak peak are the ones to watch; North Sea winds sweep across the open plains, which tends to clear things fairly quickly. The presence of Picardy and Artois arable plains in the area adds another layer to the local pattern.
Are air quality levels in Boulogne-sur-Mer 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.
Want to see air quality forecasts for other cities in France?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.