Rancang Bangun Sistem Pemantau Indeks Kualitas Udara PM 2,5, PM 10 dan CO Berbasis Internet of Things

High levels of air pollution and the impact of covid-19 can be a dangerous substance that can have serious consequences for health, so the need for air quality monitoring is very necessary. The purpose of the research is to design and realize a tool that can display air quality index numbers PM 2.5, PM 10, carbon monoxide (CO) based on the Internet of Things (IoT) with color indicators (green, yellow, red) so that someone can know air quality information online and can be monitored from anywhere. The system employed ESP32 as system control and data processing, SDS011 sensor, MQ-7 sensor, DHT11 sensor, 0.96' SPI OLED Display Module, and the Adafruit IO website to display the system data. The results showed that the measurement accuracy of PM 2.5, PM 10, CO, temperature, and humidity compared to Accuweather AQI realtime data was 99%. The system can also display measurement data on the OLED display according to the specifications made, and the system can display measurement data on the Adafruit Io website that was created