Air Quality Warning System Design Using NodeMCU and IoT Platform

Authors

  • Rangga Bimo Hermawan Universitas Gunadarma
  • Setiyono . Universitas Gunadarma

DOI:

https://doi.org/10.61769/telematika.v20i1.745

Keywords:

air quality, NodeMCU ESP8266, internet of things (IoT), warning system, real-time monitoring

Abstract

Increased air pollution in various regions necessitates an air quality monitoring system that provides real-time information easily accessible to the public. This study discusses the design of an air quality warning system based on NodeMCU and the Internet of Things (IoT) platform as a simple, inexpensive, and efficient monitoring solution. This system is designed with gas sensors (MQ-series) to detect pollutant concentrations, a NodeMCU ESP8266 module for data processing and network connection, and the Blynk platform IoT to display data online in the form of graphs, notifications, and air quality status indicators. Test results show that the system is capable of displaying real-time changes in air quality with a sufficient level of accuracy compared to reference measuring instruments. The system can also send automatic warning notifications when air quality exceeds certain thresholds. The limitations of this study include sensor sensitivity to the environment and data delays when the internet connection is unstable. This study is still limited to the use of MQ-135, DHT22, and LDR sensors, while international air quality indicators include PM2.5, PM10, CO, NO₂, SO₂, and O₃. Therefore, additional dust particle and specific gas sensors are needed to make the system more representative of WHO standards, leaving room for further development to make it more informative and comprehensive.

Author Biographies

Rangga Bimo Hermawan, Universitas Gunadarma

Computer Engineering Study Program

Setiyono ., Universitas Gunadarma

Electrical Engineering Study Program

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Published

2025-09-21

Issue

Vol. 20 No. 1 (2025)

Section

Articles

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Copyright (c) 2025 Rangga Bimo Hermawan, Setiyono

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