Amihans Breath: Development Of An IoT-Integrated Arduino System For Real-Time Indoor Air Quality Monitoring, Alert Notification, And Filtration

This study describes Amihan's Breath, an Internet-of-Things–based air quality management system using Arduino R4 Wi-Fi that monitors and regulates indoor air quality (IAQ) in Davao City. The system measures 12 air quality and thermal parameters, including PM1.0, PM2.5, PM10, NOx, CO, O₃, NH₃, VOCs, temperature, and humidity, and provides real-time monitoring, alerts, and air-filtering functions. Sensor accuracy ranged from 97–100% before and after filtration. Initial IAQ analysis indicated moderate pollution levels, with PM10 averaging 85.64 µg/m³ and NOx averaging 96.89 µg/m³. After filtration, pollutant levels significantly decreased, including a 29% reduction in NOx and substantial reductions in particulate matter. Overall, Amihan's Breath is an effective and cost-efficient IAQ management system recommended for high-risk environments such as schools and healthcare facilities.