Meaning
A bright sun with only a small cloud at its edge, meaning mostly sunny weather with just a little cloud cover.
It is the pleasant-weather choice for good mornings, outdoor plans and upbeat updates: “Morning run done, 🌤️ and a light breeze.” Among the sun-and-cloud set it is the sunniest, ahead of ⛅ and 🌥️. Figuratively it hints that things are looking good with only a minor worry.