In October 2019 Apixu will stop working, the business has been renamed "weatherstack". The new business no longer provides a free forecast but does provide current weather.
Since the forecast will no longer be free I will not be adaping this library to the new service.
Please consider using the DarkSkyWeather library instead:
https://github.com/Bodmer/DarkSkyWeather
Arduino client library for https://www.apixu.com/
Collects current weather plus daily forecasts.
Requires the JSON parse library here: https://github.com/Bodmer/JSON_Decoder
The ApixuWeather_Test example sketch sends collected data to the Serial port for API test.