IoT Sensor Based Sustainable Air Quality Monitoring System for Humans and Ecosystems in the World EmpowermentP. Gopal Krishna, Yerragudipadu Subbarayudu, G. Sai Keerthana, K. Varsha, G. Vijendar Reddy and Bharti RamolaE3S Web Conf., 430 (2023) 01080DOI: https://doi.org/10.1051/e3sconf/202343001080