Since most people using weather icons will also be using APIs by Accuweather, WUnderground, and Open Weather Map, it's good to try to match actual reported conditions as much as possible:<p><a href="https://api.accuweather.com/developers/weatherIcons" rel="nofollow">https://api.accuweather.com/developers/weatherIcons</a><p>Often designers create lots of different wind and extreme icons (Tornado, Meteor) which will never be used and not enough subtle-difference icons (Mostly Sunny, Partly Sunny, Intermittent Clouds) which are needed. When implemented, we end up using only a small portion of a collection and repeating many icons.