Abstract. The paper focuses on air quality monitoring campaigns in the city of Timisoara, in Romania. The measurements occurred during representative episodes, in the Northern and Southern part of the city, and the results were concluded in graphs and figures, raising special concern about the pollution with particles. The applied methods were standard, achieved by an accredited mobile laboratory (www.mediu.ro), as required by ISO 17025, and refer to the species: PM10, NO x , SO 2 , VOC, ozone, and CO. Finally proposals for improving the levels of concentrations were indicated, in accordance to the state of art and specificity of the city.