Cloudy

/ˈklaʊdi/
Adjective: cloudy; comparative adjective: cloudier; superlative adjective: cloudiest

(of the sky or weather) covered with or characterised by clouds.
“a very grey, cloudy day”
Synonyms: overcast, clouded, clouded over

 
As above, only more cirrocumulus, cirrus, cirrostratus, altocumulus and altostratus, stratus, cumulus, and stratocumulus coverage.