The aim of this work is to present the atmospheric pollen concentrations of Palencia, Spain. Data were collected for three consecutive years (1990–92). An active volumetric pollen trap, type CAP2, was used. During this time, 88 different pollen types were identified, of which 27 occured at more than 0.15% of the total pollen recorded annually. These types formed the main pollen spectrum of this sampling station. Pollen coming from herbs (Poaceae, Chenopodiaceae,PlantagoUrticaceae, etc.) was predominant (53.79%); arboreal pollen (Quercus, PopulusCupressaceae, etc.) represented 42.11%, and pollen from shrubs (Ericaceae,Sambucusetc.) only 4.10%.