List of free weather-API stuff for developerππ½
If you're looking for all programming tools around weather-API (not just free). Check this page List of weather-API Programming Tools

Wttr
Wttr.in is a popular weather reporting service, handling tens millions of queries daily. A wrapper for wego, intended to demonstrate the power of the console-oriented services.
Tag: weather-API

Sunrise and Sunset Times
Free API to get sunrise and sunset times for any location using coordinates.
Tag: weather-API, API, Science