noun
evening haze; evening mist
Refers to the hazy or misty atmosphere that appears in the evening, often with a poetic or literary feel.
山々が夕靄に包まれていた。
The mountains were wrapped in evening haze.
Compound of 夕 (yū, 'evening') and 靄 (moya, 'haze, mist'). The reading ゆうもや is a straightforward combination of the two elements.