This study aims to investigate the impact of firecrackers on atmospheric pollutants during Diwali festival in Tamil Nadu. This study delves into the multifaceted impact of firecrackers on atmospheric pollutants both human health and environment. Diwali festival in Tamil Nadu is renowned for its exuberant celebrations, characterized by the widespread use of firecrackers. However, this tradition comes with a significant environmental cost, as firecrackers release a plethora of pollutants into the atmosphere, deteriorating air quality and posing serious health risks to the populace. This study aims to comprehensively analyze the impact of firecrackers on atmospheric pollutants during the Diwali festival in Tamil Nadu. Through a combination of ground-level measurements, satellite observations, and atmospheric modeling, we investigate the concentration levels of key pollutants, including particulate matter (PM2.5 and PM10), sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon monoxide (CO). Our analysis reveals a substantial increase in pollutant concentrations during the Diwali period, with peak levels coinciding with the peak of firecracker activity. Furthermore, we assess the spatial distribution of pollutants across different regions of Tamil Nadu, identifying hotspots of pollution and vulnerable communities disproportionately affected by firecracker emissions. The implications of heightened pollutant levels on human health, environmental sustainability, and climate dynamics are discussed, highlighting the urgent need for mitigation strategies.