In this webinar, Professor Tawatchai Charinpanitkul, an expert in particle analysis, discussed the acquisition and processing of PM distribution data along Bangkok roadsides. Given that Bangkok is a densely populated metropolis with a population exceeding ten and a half million, monitoring roadside air quality is crucial for advancing environmental sustainability. Professor Tawatchai emphasized key activities in roadside monitoring, including continuous assessment, data collection, and the implementation of proactive measures