Use 'in the wind' to express the feeling that an event is about to take place soon. There's a sense of excitement in the wind, as the carnival draws closer.
Pro Tip 2/3
Uncertainty
'In the wind' often suggests a lack of certainty or evidence about the impending event. I heard layoffs are in the wind, but nothing's confirmed yet.
Pro Tip 3/3
Speculation
It is often used to indicate rumors or speculations regarding future happenings. Is retirement in the wind for the company's long-standing CEO?