This prototype describes the design and construction of an electronic system to measure air pollution levels in urban areas, particularly near rivers affected by greywater. Utilizing a Wireless Sensor Network (WSN), the system can effectively acquire, process, and transmit air quality data, focusing on harmful gases, such as Carbon Monoxide (CO) and Nitrogen Oxides (NOx). This study highlights the importance of air quality monitoring as a critical factor for public health given that individuals are continuously exposed to airborne pollutants. Key findings indicate that the maximum recorded levels of Carbon Monoxide reached 0.36 ppm, while Nitrogen Oxides peaked at 17.98 ppm. Notably, these values remain below the hazardous limits established by environmental authorities, suggesting that the air quality in the monitored urban area is generally safe for residents. The analysis also revealed that higher pollutant concentrations are typically found near river crossings and key infrastructure, although they do not exceed safety thresholds. The effectiveness of the electronic monitoring system is underscored by its ability to provide real-time data and alerts, facilitating timely management of air quality. The integration of cloud platforms for data visualization and analysis, along with the use of ZigBee technology for reliable data transmission, demonstrates the feasibility of modern electronic systems for environmental monitoring. This project not only emphasizes the significance of maintaining air quality but also showcases the role of innovative technologies in safeguarding public health and the environment.