Temperature, humidity, pressure and gas data registration website
Outdoor air quality testing using SDS011 and BME280 prototype enclosure in Sherwood Park, Alberta.
Data from Madrid Air quality sensor using an ESP8266, a SDS011 and a Grove multisensor
What is pm 2.5, ppm and aqi? All explained here: https://en.wikipedia.org/wiki/Air_quality_index#Computing_the_AQI
WeMos D1 Mini Pro based on project: https://www.opengreenenergy.com/post/solar-powered-wifi-weather-station-v2-0 and https://github.com/3KUdelta/Solar_WiFi_Weather_Station