Air pollution is a major problem in many cities, and the air quality index worsens daily. In a report published by the World Health Organization, hazardous particles in the air cause more premature deaths than car accidents. It has been estimated that indoor air can be as much as two to five times more toxic than outside air. As a result, we have developed a project for monitoring air quality by measuring dust particle density. MQ gas sensors are a group of devices designed to detect the presence of various synthetic compounds in the air by measuring the density of airborne dust particles. There is the possibility of connecting these gadgets to processors such as At mega328p. The models recognize at least one substance designed for a specific application, such as recognizing combustible gases, checking air quality, or finding liquor in the air. The gas sensors should be adjusted before an accurate estimation can be made. The output of the sensors is displayed on an I2C with LCD screen. We can track the quality of the air and identify chemical components present in the air.