This study investigates spatiotemporal changes in air pollution (particulate as well as gases) during the COVID-19 lockdown period over major cities of Bangladesh. The study investigated the aerosol optical depth (AOD) from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard Terra and Aqua satellites. PM2. 5 and PM10 from Copernicus Atmosphere Monitoring Service (CAMS). https://excellentphoto.shop/product-category/ring-light/