Abstract Air Pollution poses significant environmental and health challenges, particularly in South Asia, including Bangladesh, over the past two decades. Therefore, this study examines the spatiotemporal variability of aerosols (PM 2.5 , PM 10 ) and gaseous pollutants (CO, CO 2 , CH 4 , NO 2 , and SO 2 ) during December 2021 and January 2022 in Dhaka (a major city in Bangladesh) using ground-based Aeroqual S500 data. Additionally, Pearson correlation, Principal Component Analysis (PCA), and Hie