Project Idea
Create a smart IoT-based system that monitors air quality in real-time, detecting harmful gases, particulate matter, temperature, and humidity to ensure a healthier living environment. This solution provides instant alerts, data visualization, and long-term air quality trends for informed decision-making.
Project Description
The Smart Air Quality Monitoring System integrates multiple sensors with a microcontroller and cloud connectivity to track environmental conditions. It measures parameters like Ammonia (NH3), sulfur (S), Benzene (C6H6), CO₂, CO, temperature, and humidity. Data is uploaded to a cloud platform for live monitoring and historical analysis. Users can access information via a mobile app or web dashboard and receive alerts when air quality drops below safe levels. Designed for both indoor and outdoor use, this system can help reduce health risks by enabling timely action in polluted environments.
Components List
ESP32
Gas Sensors (MQ135, MQ7)
Temperature & Humidity Sensor (DHT11)
Display Module
Power Supply
Jumper Wires
Breadboard/PCB
Features
Real-Time Air Quality Monitoring
Multi-Parameter Detection (Ammonia, Sulphur, CO₂, CO, Temp, Humidity)
Web Dashboard
Indoor and Outdoor Monitoring Capability
Historical Data and Trends
Project Applications
Homes and Apartments
Offices and Workplaces
Schools and Universities
Industrial Zones
Smart Cities
Hospitals and Clinics
Shipping Dimensions
Length: 20 cm
Width: 15 cm
Height: 10 cm
Weight: 800 g
Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code
(For DIY KITs - only the components will be provided)
Project Types:
- DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
- DIY KIT with code & circuit connections - Along with the DIY Kit, you also get the code and circuit diagram files to help you make the project with more ease.
- Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
- Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Note - For some projects the code & circuit diagram may not be provided and might have to be purchased separately
Notes -
All the products are made by LearnElectronics India and not for re-sale.
These project is a prototype project to show/present/explain and work like to real life product. It is not a product, if you need a ready-made product then reach out to us here.

