also: かぜむき
noun
Literal meteorological meaning: the direction from which the wind is blowing.
今日の風向きは北西です。
The wind direction today is northwest.
Figurative use: how things are developing, the current state of affairs, or the prevailing mood/atmosphere. Often used with 変わる, 見る, or 悪い.
会議の風向きが急に変わった。
The mood of the meeting suddenly changed.
世論の風向きを見極める必要がある。
We need to gauge the trend of public opinion.