noun
look of the sky; appearance of the clouds
Refers to the overall appearance or condition of the sky, especially with regard to cloud cover or weather. Often used in contexts like weather observation or describing the sky's mood.
今日は雲合いが怪しいから、傘を持っていこう。
The sky looks threatening today, so let's take an umbrella.
山の天気は雲合いで判断する。
In the mountains, you judge the weather by the look of the sky.