Worst air pollution Sint-Niklaas, today and tomorrow
Today (16 July): Air quality in Sint-Niklaas is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 44.9/100).
Tomorrow (17 July 2026): Air quality in Sint-Niklaas is fair. All pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 52.0/100). 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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Positioned on the Flemish lowland plain, Sint-Niklaas experiences air quality shaped chiefly by vehicle traffic and light industry across the plain. The Oost-Vlaanderen terrain plays a role in how pollutants move through the area, with breezier conditions typically dispersing emissions faster than the still, settled spells that let them accumulate.
Today - 16 July | Pollution peaks at 23:00
AQI:
Medium
44.9/100
PM2.5 (fine particles):
Good
8.8/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Medium
44.9/100
O3 (ozone):
Fair
36.5/100
SO2 (sulfur dioxide):
Good
11.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Good
8.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 05:00
AQI:
Medium
52.0/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Medium
52.0/100
O3 (ozone):
Fair
34.8/100
SO2 (sulfur dioxide):
Good
11.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
10.8/100
Pollen forecast in Sint-Niklaas
View pollen forecastFrequently Asked Questions
Is air quality bad in Sint-Niklaas right now?
On 16 July 2026, overall air quality in Sint-Niklaas is fair. O3 is the main pollutant at 36.5/100. Pollution peaks around 11:00 PM (NO2: 44.9/100).
Will air quality be worse tomorrow in Sint-Niklaas?
On 17 July 2026, air quality conditions in Sint-Niklaas will be similar to today, with O3 forecast at fair at 34.8/100. Pollution peaks around 5:00 AM (NO2: 52.0/100).
When is air pollution at its worst in Sint-Niklaas?
The clearest dips in Sint-Niklaas's air quality track birch and plane pollen peaks and periods of vehicle traffic and light industry across the plain; the rest of the year typically brings clearer, more consistent conditions for the Oost-Vlaanderen area, particularly once autumn winds set in and the local terrain ventilates more easily than during calmer stretches.
Are air quality levels in Sint-Niklaas 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