what does "feel something in the air" mean?

Does it have a particular meaning?
Thank you in advance.

Typically this is said when someone has a strong feeling that something is going to happen.

I’m sure he’ll win the election, I can feel it in the air.

Sometimes it is more literal:

It’s going to rain soon, I can feel it in the air.

I didn’t think that “feel something in the air” has such a meaning. learning a new point is pleasurable. Thank you Beeesneees.