Abstract :

In view of the increasing levels of air pollution, an Advanced Air Quality Monitoring System has been developed using Arduino technology. The proposed system is capable of monitoring several critical air pollutants, including carbon dioxide, smoke, methane, sulfur dioxide (SO₂), hydrogen, ammonia (NH₃), and benzene. In addition, particulate matter (PM), which is a key indicator of air quality, is measured to provide an accurate real-time evaluation of pollution levels within a given area. The system employs gas sensors such as MQ-135, MQ-2, and MQ-7, which generate analog output signals. These signals are processed through Arduino-based programming, and the analyzed data is displayed on an LCD screen for easy interpretation. Designed for continuous real-time operation, the system provides a cost-effective and reliable solution for air quality assessment, particularly addressing the growing environmental challenges faced by urban regions in India.