noun, noun which may take the genitive case particle 'no'
slightly cloudy; lightly overcast
Describes a sky that is not completely clear but not heavily clouded; often used in weather forecasts.
今日は薄曇りの天気で、時々日が差すでしょう。
Today will be slightly cloudy with occasional sunshine.
薄曇りの空の下
I went for a walk under the lightly overcast sky.