Multisensor electronic nose system developed at the Department of Biomedical Engineering is being tested in the air quality monitoring station in Płock. Station in operated by PKN ORLEN and equipped with high precision reference analyzers for continuous measurement of the most important air parameters such as sulphur dioxide or nitrogen oxides concentration. Tests are part of the partnership between PKN ORLEN and Gdansk University of Technology. The main purpose of the measurements is to check the possibility of using the electronic nose technology in an air quality monitoring.