The Urban and Indoor Multi-scale EXposure and Air Quality (uiMEX-AQ) research group aims at studying and understanding the air quality and exposure in various environments. It focuses on Indoor and Urban Air Quality, Physics, Chemistry, and Exposure based-on developing and utilizing multi-scale monitoring tools and methods by combining state-of-the-art experimental setup, cost-effective tools, models, and data analysis with a flavor of machine learning and artificial intelligence.