Raspberry Pi Weather and Air Quality Monitor

About

Raspberry Pi Weather and Air Quality Monitor is a real-time environmental monitoring system using a Raspberry Pi and multiple sensors to track air quality (CO₂, TVOC), temperature, humidity, and atmospheric pressure.

The data is served through a Flask web application and displayed on a dynamic, auto-updating frontend.

Features

-🌫️ Real-time CO₂ and TVOC readings

-🌡️ Temperature, humidity, and pressure monitoring

-🧠 Flask-based backend with live API (/get_data)

-🌐 Responsive frontend with auto-refreshing values (every 2 seconds)

-📝 Data logging to sensor_data.txt with timestamps

Demo

Access the application from your Raspberry Pi or any device on the same network:

http://<your-ip>:5000/

Example:

http://192.168.1.100:5000/

Getting Started

Prerequisites

Make sure you have the following:

• Raspberry Pi 4 (or compatible)
• Raspberry Pi OS Lite installed
• Python 3 and pip
• Internet connection (for installing packages)
• WPSE342 Sensor
• Breadboard, jumper wires (male-female)

Wiring

Sensor Pin	Raspberry Pi Pin
VCC	3.3V
GND	GND
SDA	GPIO 2 (SDA)
SCL	GPIO 3 (SCL)
WAKE	GPIO 4

Installation

1. Enable I2C on your Raspberry Pi:

 sudo raspi-config

Navigate to Interfacing Options > I2C > Enable.

2. Install dependencies:

 sudo apt update
 sudo apt install python3-pip i2c-tools
 pip3 install --break-system-packages flask adafruit-circuitpython-ccs811 adafruit-circuitpython-bme280

3. Clone or copy this project:

 git clone https://github.com/idleCyrex/raspberry-pi-weather-air-quality-monitor.git
 cd raspberry-pi-weather-air-quality-monitor

4. Run the application:

 python3 app.py

5. Open your browser and go to:

http://<your-raspberry-pi-ip>:5000/

File Structure

 app.py # Flask backend (main file)
      templates/
           index.html # Frontend UI
      static/
           style.css # Optional custom styles
 sensor_data.txt # Auto-generated data log

Notes

• Make sure the sensor is properly connected and detected using i2cdetect -y 1
• All sensor data is logged to sensor_data.txt every time the API is called
• Page auto-refreshes every 2 seconds using JavaScript fetch()

---

License

This project was created for educational purposes. You are free to reuse or modify it as needed.