Design and Development of an IoT-Based Air Quality Monitoring System

Ir. Ari Kusyanti, S.T., M.Sc.Dosen
•
Fariz Andri Bakhtiar, S.T., M.Kom.Dosen

14 April 2026

This project develops an Internet of Things (IoT) system for real-time air quality monitoring using the MQ135 sensor and ESP32 microcontroller. The collected data is sent to the cloud and visualized through a web-based dashboard.

System Components

  1. Air Quality Sensor (MQ135)
    Detects various gases and pollutants such as CO2, NH3, alcohol, cigarette smoke, and other airborne contaminants.
  2. ESP32 Microcontroller
    Provides Wi-Fi connectivity and transmits sensor data to an MQTT server.
  3. Web Dashboard
    Displays real-time air quality data through interactive charts using Chart.js and WebSocket.

System Benefits

  • Increases public awareness of air pollution.
  • Provides environmental data to support decision-making and policymaking.
  • Supports the development of smart city initiatives.