The Weather Icons project created and maintained by Erik Flowers. v1.0 artwork by Lukas Bischoff. v1.1 - 2.0 artwork by Erik Flowers
http://erikflowers.github.io/weather-icons/

Weather Icons licensed under SIL OFL 1.1, Code licensed under MIT License, Documentation licensed under CC BY 3.0
http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL
https://opensource.org/licenses/mit-license.html
https://creativecommons.org/licenses/by/3.0/