The Met Office has issued another yellow weather warning for fog.
Forecasters said fog patches will form this evening, becoming more widespread overnight. Some dense fog patches are possible, with visibilities perhaps dropping to between 50 and 100 m in a few places.
Conditions should slowly improve on Saturday, although a few areas of fog may last until afternoon across the east of the warning area.
The warning will be in force across Herefordshire, Worcestershire and Shropshire from 7pm on Friday until 11am on Saturday.