The plane tree (Platanus sp.) is one of frequently used ornamental trees in Slovak urban areas.The population of London plane in the Slovak Republic has not been affected so far by importantdangerous pathogens common to warmer regions of Europe. However, in recent years the healthstate of plane trees has been significantly deteriorating. During 2004–2008, reappearances ofanthracnose on Platanus × hispanica M ü n c h h . were recorded. The causal agens of the disease,microscopical fungi of genus Apiognomonia [A. veneta (S a c c . & S p e g . ) H ö h n .], were isolatedfrom symptomatic leaves and twigs, with characteristic spots and lesions sampled from affected hosttrees growing in the urban environment at the selected localities (Nitra, Komárno, Piešťany). Thespreading of fungi basically depends on meteorological conditions, for example air humidity andprecipitation, active solar radiation and air temperature. In this study, climatological parameters,air temperature and annual precipitation with their influence on the incidence of Apiognomoniaanthracnose on plane trees growing in urban settings are presented. Our results show that planepopulation damage can be irreversible and very considerable in consequence of repeated climaticallyunfavourable years, resulting in the subsequent development of A. veneta infection.