This document describes a wireless sensor network system for air pollution monitoring using Zigbee technology. The system uses sensors to monitor levels of pollutants like carbon dioxide, carbon monoxide, and other gases. An ARM processor interfaces with the sensors and transmits the sensed data wirelessly via Zigbee modules. The data is stored in a system and can be accessed through a .Net application to monitor pollution levels and take necessary precautions. The system aims to accurately measure pollution in real-time using a flexible and wireless approach.