The pollen content of the air in Munich was determined during six years (1971 to 1976) using a Burkard spore trap. Samples were taken continuously 24 hours a day from the beginning of February to the end of October. The mean changes of the pollen content in defined volumes of air during the years are summarized in two graphs and 4 tables, showing the most frequently and rarely found pollen types at the sampling site. Pollen of at least 49 taxa were registered. 72% of all pollen could be associated with 5 taxa, namely with grasses, birch, nettle, pine, and elm. A survey of the trees in the neighbourhood of the trap was accomplished to determine the origin of the collected tree pollen.