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Low-Cost Air Quality Monitoring Using IoT Sensors

Project: BreatheEasy

Members / AuthorsAarav Sharma, Priya Nair, Rohan Mehta
Author typeStudent
College / OrganisationNational Institute of Technology, Surat
KeywordsIoT, air quality, ESP32, MQTT, sensors
Published29 Jun 2026

Abstract

This paper presents a low-cost, solar-powered air quality monitoring node built around the ESP32 and a set of MEMS gas sensors. We describe the calibration pipeline, a lightweight MQTT data path, and a city-scale dashboard. Field trials across three localities show an accuracy within 8% of reference-grade monitors at under 5% of the cost.

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