I looked at the official doc but it doesn’t seem to be supported today (also see comment from Taras here Is it possible to add UV index attribute to weather template? who confirmed)
My goal is to have a template weather entity that serves as an “aggregator” of a few different ones and then base all my dashboards and automations on that aggergator entity. This way if I ever change which providers I use for different pieces of weather info, I do not need to update anything other than the template weather sensor.
Thank you.