Filtering of ground level air is performed continuously at six different locations in Sweden: Kiruna, Umeå, Gävle, Kista, Visby and Ljungbyhed. The filters are pressed into weekly samples and the contents of different radionuclides are measured by gamma spectroscopy. Precipitation is also collected at four of the stations: Kiruna, Gävle, Kista and Ljungbyhed. The samples are ashed and the contents of radionuclides are measured. Weekly activity concentrations of 7Be and 137Cs during 2012 in air and precipitation are presented for the different stations. During the period from 16th of January to 14th of February increased levels of 131I were detected in Sweden. Analyses of these detections are presented in the Appendix I.