A yellow weather warning has been issued for fog this evening.
Forecaster at the Met Office say fog patches are expected to form during Tuesday night, becoming dense and freezing in places by dawn on Wednesday, particularly in river valleys with visibility less than 100 metres at times. Fog will thin slowly later Wednesday morning.
The warning will be in force across Herefordshire, Worcestershire, Gloucestershire, Shropshire and Monmouthshire from 10pm this evening until 12pm on Wednesday.
Get the Sunshine Radio 5-day forecast here.