The results of the airQmap measurement campaign by Leuven2030 are available. During the period 11/5/2016 – 19/06/2016 two simultaneous airQmap measurement campaigns have been performed in Leuven, one during working days and a second one during weekends and holidays. A large difference in air quality (BC) can be observed between working day rush hours and weekends. Weekend measurements are performed to represent a situation with less traffic. Therefore weekend measurements were performed on Saturday morning and Sunday; in this way, avoiding hours (Saturday afternoon) when more traffic is expected due to shopping.