Cleaner, fresher air coming from south-west overnight

Showery outbreaks of rain will persist overnight across northern England and much of Scotland.

Misty and murky conditions will be forming out toward the North Sea coast, and we are still pulling up that polluted air from the south-east.

Things will be changing overnight, however - a south-westerly air flow will feed in much cleaner, fresher air.

Read: Sharp rise in 999 calls as parts of the UK are hit by smog

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High levels of pollution expected to clear

Air pollution levels remain high across parts of England and Wales but are expected to reduce later today. The South East and Greater London are still experiencing "high" levels of pollution, Defra warns.