There's a real chill in the air.

Meaning

It's noticeably cold.

Examples

• John: Brrr, are you feeling that?
• Alice: Yes! <b>There's a real chill in the air</b>. I wish I had brought a warmer coat.
• John: Me too. It's unexpected for this time of year.
• Alice: I know. I can definitely feel it. <b>There's a real chill in the air</b> tonight.