The temporal trends and the environmental factors influencing the airborne fungi of a Turin suburb (Italy) were investigated over two years. Fungal propagules were collected fortnightly with a single-stage volumetric sieve sampler onto PDA supplemented with streptomycin and chloramphenicol. The data for each year (including those for the previous year's monitoring of the same site) were compared and analyzed with Canonical Correspondence Analysis. The fungal aerosols for the three consecutive years displayed many common features. There was a regularly repeated dominant and stable component (mainly composed of Cladosporium, Penicillium, Aspergillus, Epicoccum, Alternaria, yeasts, basidiomycete and sterile moniliaceous and dematiaceous mycelia). Many other less abundant and less frequent entities were also recurrent. Species of Cladosporium and Penicillium and yeasts dominate Turin's fungal aerosol. The qualitative and quantitative variations of this airborne fungal community were significantly influenced (P ≤ 0.01) by the factors that have the greatest influence on Turin's climate, namely temperature, relative humidity and rainfall. These environmental variables appear to act selectively on the taxonomic and biological groups of the airborne fungi.