There's a distinct chill in the air.

Meaning

The air feels noticeably colder.

Examples

• John: 'I think winter is coming. It's quite cold tonight.'
• Alice: '<b>There's a distinct chill in the air.</b> I'm glad I put on my coat.'
• John: 'Yes, <b>there's a distinct chill in the air</b> even though the sun is out.'
• Alice: 'It feels colder than the forecast predicted.'