Promnuchanont, T., Saengsri, T., Kosarat, R., & Yuenyongsathaworn, P. (2025). Time Series-Based Predictive Modeling of PM2.5 Levels in Chiang Mai, Thailand. RMUTL Engineering Journal, 10(2), 22–33. https://doi.org/10.14456/rmutlengj.2025.11