Environmental pollution has become a major global concern due to rapid industrialization, urbanization, and increasing vehicular emissions. Continuous monitoring of air quality and environmental parameters is essential for protecting public health and maintaining ecological balance. This paper presents an Internet of Things (IoT)-based Environmental Pollution Monitoring System designed to collect, analyze, and transmit real-time environmental data. The proposed system utilizes various sensors to measure parameters such as air quality, temperature, humidity, and harmful gas concentrations. Sensor data are processed by a microcontroller and transmitted to a cloud platform through wireless communication technologies, enabling remote monitoring and analysis. The system provides timely alerts when pollution levels exceed predefined thresholds, facilitating prompt corrective actions by authorities and stakeholders. The implementation of IoT technology enhances the accuracy, scalability, and accessibility of environmental monitoring while reducing operational costs. Experimental results demonstrate the effectiveness of the proposed system in providing real-time pollution assessment and supporting sustainable environmental management.

Keywords— Internet of Things (IoT), Environmental Pollution Monitoring, Air Quality Monitoring, Smart Sensors, Wireless Sensor Networks, Cloud Computing, Real-Time Monitoring, Environmental Sustainability, Smart Environment, Data Analytics.