---
Number: 4
heading: "Air Quality and Noise Pollution Level"
---

- [1. Air Quality Monitoring and Alert System using Arduino with MQ135](https://www.youtube.com/watch?v=SCXteaUVICw)
- [2. IoT based Noise & Air quality Monitoring using Blynk IoT | New Automation Tab update in Blynk](https://www.youtube.com/watch?v=p3-0mWkOFBk)