
We have used two APIs: https://waqi.info and https://docs.airnowapi.org/
We had the challenge to adapt webservice input format. One of the is for latitude and longitude, and a the another uses zipcodes.
The main goal was to make this kind of informations available for people in countries where the pollution of the air is dangerous for them. The idea of turning the website information into mobile formar since, at this moment, there is more people using their phones to access the internet rather than his computers.
Future steps will be add more data sources and offers forecasting using machine learning.
Github: https://github.com/joseavalero/airwatcher/
Other resources:
Graphip librery, https://github.com/PhilJay/MPAndroidChart#
Google Maps API.