[περίληψη] In the framework of the PROMOTE project the Laboratory of Atmospheric Physics (LAP) has developed an operational forecasting system which provides meteorological and air quality forecasts for a domain covering Greece. The air quality forecasting system operates with the chemical transport model CAMx driven by the meteorological mesoscale meteorological model MM5. Emissions used so far in the operational runs include gaseous pollutants of biogenic and anthropogenic origin. Compilation of an improved emission inventory including additional gaseous species and particulate matter is accomplished. In this work we present results of the LAP air quality modelling system for the year 2006 focusing on ozone and results of a case study to test the new emission inventory including particulate matter and additional gaseous species. The model results are validated with observations from the Monitoring Network of the Greek Ministry of Environment and the Region of Central Macedonia, Directorate of Environment and Land Planning.