One of the most significant determinants of public health as well as the environment is air quality. This paper elaborates on an innovative, real-time monitoring system designed to concurrently detect and analyze common pollutants and hazardous gases. The system takes advanced sensing technologies with data analytics to offer real-time, accurate, actionable information on air quality. The system involves a network of sensors, used in measuring concentrations of air pollutants like particulate matter PM2.5 and PM10, nitrogen dioxide NO2, sulphur dioxide SO2, carbon monoxide CO, and ozone O3, besides hazardous gases that include volatile organic compounds VOCs and hydrogen sulfide H2S. The real-time data are processed and visualized via an intuitive interface that allows users to monitor the trends of air quality or be alerted of hazardous conditions. The system is extensively tested in the field conditions, which thus showcases its applicability in diverse settings. It has been developed to be further enhanced for environmental monitoring and policy decision-making with respect to public health outcomes improvement.