How to express cloudy and rainy days with circles?

The figure on the left is the symbol representing the physical quantity of a station on the weather map, in which the yellow highlighted circle symbol represents the cloud amount of the station. The picture on the right is the representation of various cloud cover, and the hollow circle indicates that the cloud cover is 0%, which is sunny; The circle is filled with 1/4, indicating that the cloud cover is 25%; The circle is filled with 3/4, indicating that the cloud cover is 75%; Filled with circles, indicating that the cloud cover is100%; There is an X in the circle, which means the sky is dark and fuzzy.