Reading your recent posts I was wondering if the same kind of information was existing in France, and indeed it is.
PREV’AIR offers a selection of air quality products accessible every day at 9am. The available data concern the prediction (up to D + 2) and the analysis (optimal representation on the basis of modeling and real-time observations available every day for the day before D-1) of the surface concentrations (in μg / m3) of the main pollutants namely ozone (O3) and particles (PM10). Values provided are relative to either the hourly maximum of the day or the daily average.
The data is available in the form of maps covering metropolitan France at a spatial resolution of about 2km. The latitude longitude variables (lat / lon) corresponding to the center of the meshes of the model.
The files are in netcdf format