Invitation BRAL presents CurieuzenAir

In October 2021, 3,000 Brussels residents participated in the largest ever citizen survey on air quality in Brussels.  Individuals, families, schools, businesses and organisations measured the NO2 at their windows for a month. They wanted to find out how healthy is the air they breathe every day in their street. The fact that the World Health Organisation has lowered its healthy limits based on new scientific evidence arouses curiosity all the more.