People are exposed to air pollutants both indoors and outdoors depending on the activities of individuals. It is important to measure exposure levels to different polluting gases, especially for sensitive or susceptible individuals such as children, the elderly and the persistently ill. To avoid such negative imbalances in nature, an air quality monitoring system is of utmost importance. Recent technological improvements have made it conceivable to deploy cost-effective wireless sensor nodes for environmental monitoring, indoor climate control, examination, structural monitoring, collection of sensing information in non-receptive locations, and ambient air. We propose an online pollutant concentration monitoring system focused on sensor network technologies. We will attempt to develop an effective solution for air pollution monitoring using WSN which is characterized by low-cost renewable energy source, simple to set up, without excessive maintenance etc., and can achieve an assortment of various regional unmanned products at low cost continuous monitoring. This system helps us monitor the various constituents of the air eliminating the need to visit distant sites for data collection. The data is collected on a central server and automatically displayed in a formed online database. Keywords: sensor, pollution, monitor, AQI, WSNI. INTRODUCTION Terrible environmental air conditions are affecting the health of more than 120 million people worldwide. In India, increasing trade progress and rapid population growth, from 300 million to more than a billion people today, are putting a strain on the country's environment, economic structure and natural resources. India is among the countries in the world… paper center… monitoring from remote locations. Mobile Uses solar energy. Consists of commercially available devices, components and standards. Can be easily adapted to accommodate various types of sensors. Accurate and continuous real-time data collection.A. Methodology of the proposed systemBased on microsensor technologies, GPRS, to meet the need of monitoring air pollutants, we have developed a remote online monitoring system. The system mainly includes monitoring equipment, data servers and clients, as shown in Figure 1. The design of monitoring equipment is the main task of the whole system. The equipment can be used in the most polluted monitoring regions. It can collect the concentration of polluting gases through sensors. The GPRS network will send the collected data to the data server, then immediately you can query, analyze and monitor data on various users.