Mokuda - Air Quality Monitoring

System Description

The Air Quality Monitoring and Classification System is designed to monitor real-time air conditions in the Malang City area using Internet of Things (IoT) technology and the K-Nearest Neighbor (KNN) classification method. The system utilizes an ESP32 microcontroller connected to MQ-131, MQ-135, and DSM501A sensors to measure key air quality parameters such as Ozone (O₃), Nitrogen Dioxide (NO₂), Carbon Monoxide (CO), and Particulate Matter (PM2.5).

Sensor data is transmitted via the MQTT protocol to a backend service for storage in a database. The data is then processed into the daily Air Pollution Standard Index (ISPU) based on the Indonesian Ministry of Environment and Forestry (KLHK) standards and classified using the KNN algorithm to generate air quality categories such as “Good”, “Moderate”, “Unhealthy”, “Very Unhealthy”, or “Hazardous”. The results are displayed visually on a website, making them easy for the public to understand.

Key Features

1. Real-Time Air Quality Monitoring

• Displays real-time measurements of air parameters (O₃, NO₂, CO, PM2.5).
• Shows ISPU categories visually with colors and labels.

2. Air Quality Classification using KNN

• Uses the KNN algorithm to classify air quality based on sensor data.
• Achieves up to 94% accuracy in training data tests.

3. Air Quality Data History Management

• Stores hourly and daily historical data.
• Allows admin to review and analyze air quality trends.

4. News Portal

• Admin can add, edit, and delete news related to air pollution and environmental issues.

5. Air Station Location Configuration

• Admin can add or adjust the location points of monitoring stations.

6. User and Admin Access

• Users: Can view ISPU information and detailed air quality data without logging in.
• Admins: Can manage data, news, and station locations after logging in.

7. Website Data Visualization

• Interactive React.js-based dashboard for displaying data and air quality categories.
• Map view of station locations for easier area exploration.