What do the icons mean on the weather forecast?

[frazmi]

Looking at the hourly forecast, many of the icons are obvious -- rain, sun, etc. But some elude me completely. Is there an "icon reference chart"? Example: in tomorrow's forecast I see pale blue circles from 7pm to 7am. No clue what they mean! Then on Wednesday evening there's a pale blue and white symbol that looks like a crescent moon. Obviously related to the pale blue circle... but it eludes me. So... where's the legend? TIA!!

[Korina]

@frazmi Hello, could you please post a screenshot of the icon, you are not sure about?

[Gkikas LGPZ]

@frazmi
Pale blue=new moon