What is the symbol for clear skies?

Answer 1

If you are talking about the station model found on Surface Analysis charts, the cloud symbol would be an open circle (cloud coverage less than 1/10 coverage). The fog symbol would be 3 equal length horizontal lines stacked vertically separating the station temperature (on top) and the station dewpoint (beneath) to the left of the open circle.

Answer 2

The symbol for fog depends on how much fog is present and the depth of the fog. There are at least 12 different symbols used. The symbols are a series of horizontal lines such as

____

____

____

This means there is a lot of fog.

If the symbol has broken lines, it indicates a patchy or semi-obscured sky such as

__ __

_____

__ __

A complete listing of weather map symbols is available in the links section below.

Answer 3

The symbol for clear skies during the day is a sun. The symbol for clear skies at night is a set of stars.