Air pollution is a major global environmental and health hazard. International organizations continuously develop new policies and strategies to mitigate its impact and improve air quality. One of the most critical air pollutants is particulate matter (PM), classified as PM10 and PM2.5, with the latter posing a greater risk to human health. In urban areas, PM concentrations often exceed safe limits due to the synergistic effects of anthropogenic activities, natural processes and climate factors. Among the most concerning and least studied components of airborne PM are nanoparticles (NP) and microplastics.This project aims to investigate the composition and dynamics of inorganic PM, NPs and microplastics in urban areas under varying anthropogenic pressures (urban, industrial and tourism) and different climate conditions (summer-winter). The study will sample and analyse airborne PM, PM deposited on vegetation and road dust. In addition, the influence of precipitation on the transfer of particulates will be investigated by sampling rain and snow. The analysis of stormwater will provide information on the potential impact of PM on the environment. Quantitative and qualitative microbiological analysis of airborne PM will provide information on the potential role of PM on the spread of pathogens and/or allergens.The research methodology will ba based on electron microscopy techniques (SEM, SEM-EDS, TEM), Raman spectroscopy, magnetic measurements and ICP-QQQ with a single particle mode.The results will offer new insights into the origin, transfer and cycling of inorganic PM, NPs and microplastics in urban areas, the role of precipitation in their transformation and transport, and the potential for their release into the environment through stormwater overflows – an issue exacerbated by climate change. The knowledge gained will enable better management strategies aimed at reducing airborne PM concentrations and mitigating its impact on the environment.