The study compares the maple pollen seasons in Bialystok, Bydgoszcz, Cracow, Drawsko Pomorskie, Sosnowiec, Lublin, Olsztyn, Opole, Piotrkow Trybunalski, Szczecin, Warsaw and Zielona Gora in 2018. The investigations were conducted using the volumetric method. The maple season started in all sites in the first decade of April, with the exception of Sosnowiec, where the season began already on March 16th. The peak values of seasonal pollen count occurred between 12th–20th April in all cities. The highest daily pollen count was recorded in Sosnowiec and in Lublin on the same day (12th April) in both cities. The greatest risk of allergies caused by the presence of airborne maple pollen was observed in Sosnowiec, Lublin and Opole.