High resolution multi-scale air quality modelling for all streets in Denmark

•Annual concentrations of NO2, PM2.5 and PM10 have been modelled for all addresses in Denmark.•A multi-scale modelling approach is applied and validated again measurements.•Traffic data from a newly developed national Danish Transport Model is used.•A national travel speed dataset based on GPS readings of vehicles is used.•An air quality map was made publicly available on a website in September 2016 (http://luftenpaadinvej.au.dk).