We inform you that the COST Action TD1105 EuNetAir has planned the 3^rd International Workshop on New Trends and Challenges for Air Quality Control, that will take place in Riga (Latvia) at University of Latvia on 26–27 March 2015. Plenary Session, Oral Sessions and Poster Session will be held inside Action Workshop with European Speakers from Action and External International Experts including Early Stage Researchers. Discussions with EC and national/regional policy managers and stakeholders are highly expected. Your participation is highly welcomed. More information is available in the section Workshops – Riga of these webpages.