Up-to-date air quality data from the monitoring networks of the Federal Länder are available at the websites of the agencies responsible (in German). Questions concerning specific sites or data in the Länder can be answered there by qualified staff.Baden-WurttembergBavariaBerlinBrandenburgBremenHamburgHesseMecklenburg-West PomeraniaLower SaxonyNorth Rhine-WestphaliaRhineland-PalatinateSaarlandSaxo... read more