Worst air pollution Arras, today and tomorrow
Today (20 September): Air quality in Arras is fair. AQI, PM2.5, PM10, and NO2 are fair; O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM2.5: 31.1/100).
Tomorrow (21 September 2026): Air quality in Arras is moderate. AQI worsens to moderate; PM2.5 increases to moderate; O3 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 AM (PM2.5: 40.6/100). Airmine updates local air quality forecasts four times daily.
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Air quality in Arras reflects former coalfield industry and motorway traffic as the main local source, alongside its setting near the Deule, and North Sea winds sweep across the open plains, which helps maintain reasonable air quality across the year. 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 - 20 September | Pollution peaks at 23:00
AQI:
Fair
31.1/100
PM2.5 (fine particles):
Fair
31.1/100
PM10 (coarse particles):
Fair
20.2/100
NO2 (nitrogen dioxide):
Fair
25.6/100
O3 (ozone):
Good
17.2/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
18.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 04:00
AQI:
Moderate
40.6/100
PM2.5 (fine particles):
Moderate
40.6/100
PM10 (coarse particles):
Fair
25.5/100
NO2 (nitrogen dioxide):
Fair
34.0/100
O3 (ozone):
Fair
21.7/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Fair
24.9/100
Pollen forecast in Arras
View pollen forecastFrequently Asked Questions
Is air quality bad in Arras right now?
On 20 September 2026, overall air quality in Arras is fair. AQI is the main air quality indicator at 31.1/100. Pollution peaks around 11:00 PM (PM2.5: 31.1/100).
Will air quality be worse tomorrow in Arras?
On 21 September 2026, air quality conditions in Arras will be worse than today, with AQI forecast at moderate at 40.6/100. Pollution peaks around 4:00 AM (PM2.5: 40.6/100).
When is air pollution at its worst in Arras?
The days that hit sensitive groups hardest in Arras are calm spring ones, when former coalfield industry and motorway traffic and the birch and oak pollen peak overlap; North Sea winds sweep across the open plains, so relief usually isn't far behind.
Are air quality levels in Arras 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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