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Introduction. The purpose of this study was to evaluate the microbiological quality of the air at the selected places which are located in Cracow and also to determine the influence of weather conditions, such as temperature, humidity and pollination on the number of microorganisms. Material and methods. Samples of air were taken during spring, summer, autumn and winter. The analyses were carried out by using a single-stage MAS-100 impactor (Merck) and repeated three times. Results were compared to guidelines which are included in Polish Standards. Results. The results of the study suggest that there is correlation between seasons and number of microorganisms. Moreover the number of microbes depends on location. The highest concentration of all groups of microorganisms occurred in summer and autumn. Conversely the lowest number of microbes occurred in winter. The results indicated that the composition of bioaerozol is typical and consists of fungi: Cladosporium spp., Mucor spp., Penicillium spp., Alternaria spp., Trichothecium spp., Fusarium spp., bacteria: Micrococcus spp., Diplococcus spp., Tetracoccus spp., Streptobacillus spp., Staphylococcus spp. and actinomycetes. Conclusions. The results revealed that there is a big difference in the occurence of microorganisms and it depends on season and location as well. However our study indicates that air does not pose a microbiological threat to runners |
