Meteorological conditions are important information in Air Quality Monitoring Sy-stems and Networks. As the fate of air pollutants is influenced by the movements and characteristics of the air mass into which they are emitted, no air quality data is com-plete without an accurate in situ record of meteorological conditions. Atmospheric dy-namics determine the formation, transport, deposition and dilution of the pollutant. Primary meteorological variables for AQM applications include Wind Speed, Wind Di-rection, Air Temperature and Relative Humidity, Atmospheric pressure, Radiation and Rain. The turbulence index of the atmosphere typically refers to the atmospheric stabil-ity which is an important information to analyse the deposition and dilution of the pol-lutant over a certain area. Characterization of atmospheric stability for dispersion mod-elling purposes involves measurements of temperature, radiation intensity and wind speed.

LSI Lastem has a long-lasting tradition and experience in this field of application. In the 80s our company supplied the first sensors and acquisition system for wind and atmo-spheric stability categories evaluation to ENEL (Italian National Authority for Electric Energy) to study plume dynamic in power plants. Over the years, LSI Lastem has deve-loped strong bonds with many pollution control institutions, air quality analyzers ma-nufacturers and system integrators throughout the world. Nowadays, LSI Lastem sup-plies its line of sensors to partners, OEM and distributors in every continent.