In large parts of Brussels and the rest of the country, the information threshold for fine dust particles in the air was exceeded around 10:00 AM on Thursday.
The threshold is 50 µg/m³, which is when the population has to be informed of the bad air quality.
The north of Brussels in particular has a lot of fine dust particles are in the air, according to IRCEL, the Belgian Interregional Environment Agency. In the Brussels municipality of Haren, the PM10-values were measured at a high of 88 µg/m³.
The meteorological conditions, sunny and not a lot of wind, have been favourable for the formation of fine dust for several days now. However, increasing wind and rain showers from the west will ensure a decreasing of the PM10 concentrations and a slow improvement in air quality in coming days.