The Met Office has issued another yellow warning for fog later.
Forecasters said fog patches will reform during Thursday afternoon, particularly in river valleys and near lakes, and may become locally dense during the evening with visibility below 100 m in places.
Fog is expected to become more widespread overnight and after dawn on Friday morning with further dense patches, before slowly clearing. However, a few patches may persist into the afternoon.
The warning will come into force across Herefordshire, Monmouthshire, Worcestershire and Shropshire from 5pm today until 11am tomorrow.
Drug dealer with distinctive tattoo caught red-handed
New substation to boost reliability across Monmouthshire
Bridge repairs could begin soon says Monmouth MP
Raft Race raises more than £11,000 for hospice
Budget plan proposes council tax rise and hiking parking and other charges