Openweather API service : https://openweathermap.org/price EPD Centralised Environmental Database (CED) ( eiaced.epd.gov.hk ) aqicn.org : https://aqicn.org/data-feed/templates/ Using the World Air Quality Index API to make pollution maps : https://github.com/kidGodzilla/aqicn-api https://pythonhowtoprogram.com/category/apis/ https://erc.cuhk.edu.hk/2023/03/17/hong-kong-offical-data-sources-from-various-governmental-institutions/ https://hedleyindex.hku.hk/en EPD Past 24-hour Pollutant Concentration of individual Air Quality Monitoring stations (English) EPD Air Quality Monitoring Network of Hong Kong EPD Environmental Protection Interactive Centre Air Quality Data Download