The BioAirMet project will develop traceable methods for calibrating automatic bioaerosol monitors, including guidelines for institutions responsible for monitoring networks. Bioaerosols include pollen and fungal spores. Data output, interfaces and metadata for automatic bioaerosol monitors will be standardised, including guidelines on data storage and handling. A new standard on automatic pollen and fungal spore monitoring within the CEN/TC 264/WG 39 will be developed.