Meteorological drivers of PM2.5 pollution in Bangkok, Thailand (2020–2024) — Dataset and R analysis code

Quality-controlled daily PM2.5 and meteorological data from 12 monitoring stations in Bangkok, Thailand (2020-2024). Includes processed dataset (n=1,267 observations), R analysis code for all 16 analytical steps (STL decomposition, MLR, Ridge regression, Random Forest with time-series cross-validation, station-level ICC, k-means seasonal classification, pandemic sub-period analysis), and Python figure generation scripts.