Worst air pollution Calais, today and tomorrow
Today (16 July): Air quality in Calais is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 21.5/100).
Tomorrow (17 July 2026): Air quality in Calais is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 28.6/100). 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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Calais' air quality reflects its exceptional English Channel position at the narrowest point of the Strait of Dover, with the port's intensive ferry and freight vehicle operations generating concentrated NOₓ from one of Europe's busiest short sea crossings. The Channel's powerful westerly and northeasterly winds provide strong natural ventilation, while the A16 motorway freight approach and cross-Channel freight intensity make Calais one of France's most distinctively port and freight-dominated urban environments.
Today - 16 July | Pollution peaks at 18:00
AQI:
Fair
21.5/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
15.3/100
O3 (ozone):
Fair
21.5/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
7.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 17:00
AQI:
Fair
28.6/100
PM2.5 (fine particles):
Good
11.9/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
13.5/100
O3 (ozone):
Fair
28.6/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
9.7/100
Pollen forecast in Calais
View pollen forecastFrequently Asked Questions
Is air quality bad in Calais right now?
On 16 July 2026, overall air quality in Calais is fair. AQI is the main air quality indicator at 21.5/100. Pollution peaks around 6:00 PM (O3: 21.5/100).
Will air quality be worse tomorrow in Calais?
On 17 July 2026, air quality conditions in Calais will be similar to today, with AQI forecast at fair at 28.6/100. Pollution peaks around 5:00 PM (O3: 28.6/100).
When is air pollution at its worst in Calais?
For people sensitive to both pollen and pollution in Calais, 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.
Are air quality levels in Calais 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.
Want to see air quality forecasts for other cities in France?
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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