Since climate plays a crucial role on our planet and is an inseparable part of all human activities, it is necessary to precisely record all parameters in order to estimate current climate conditions, climate characteristics of a certain region, as well as to try to predict and calculate further trends of climate change. Therefore, for the purpose of this paper, air temperature and precipitation of four meteorological stations in the Nišava river valley in Southeastern Serbia (municipalities of Dimitrovgrad, Pirot, Bela Palanka and Niš) have been considered for the period 1960-2015 along with statistical methods for analysis of these parameters and prediction of their trends. Results have shown that there is a positive trend in mean annual air temperatures and average seasonal air temperatures for the whole region which can influence natural processes and human activities. For precipitation, it can be concluded that no significant change in mean annual precipitation for the observed period has occurred. However, there is a great difference in the amount of precipitation between consecutive years, especially from 2000 onwards which can cause very dry years or years with floods.

Pluvial flooding is a result of overland flow and ponding before the runoff enters any watercourse, drainage system or sewer, or cannot enter it because the network is full to capacity, usually caused by intense rainfall. River and coastal floods get the most attention since they are largest and last the longest, while pluvial floods are relatively marginalized in research. Therefore, the main goal of this research was to show risk posed by pluvial floods, their connection to current global climate change processes, present effects of flooding in European cities, as well as what we can expect in the future. Furthermore, the aims were to present and get more familiar with scientific projects, strategies, directives and measures devised both on national and international levels, that deal with urban pluvial flood issues across the European continent. Climate change projections indicate that there will be an increase in the frequency and intensity of rainfall events throughout Europe and along with ongoing urbanization, the problem of pluvial flooding will most certainly require more attention, which it is starting to receive. Some countries have already developed their strategies and initiatives and implemented both structural and non-structural measures, such as spatial planning, constructional measures, information systems, reducing land sealing through policies, building codes and standards, on-site improvement of retention, infiltration, evaporation, and rainfall water recycling with the use of green roofs, permeable or porous pavements, rain gardening or urban rainwater harvesting. At the same time, there are numerous research papers, studies, conferences and workshops devoted to the problem of pluvial flooding and its management carried out in an attempt to properly deal with this hazard.