A yellow fog warning is in place across London on Sunday, with the Met Office warning of likely travel delays.
The warning is in effect until 10am, but the forecaster said some patches of fog could last until the afternoon, and people should be prepared for changes to weather conditions.
Visibility and affected regions
Visibility will vary from place to place, with some dense fog patches bringing it down to less than 100 metres, the Met Office said.
The warning covers London and other parts of England, including the East Midlands, East of England, South East England, North West England, South West England, the West Midlands, and Yorkshire and Humber. It is also in place for Denbighshire, Monmouthshire, Powys, Torfaen, and Wrexham in Wales.
Travel advice and impact
People can expect traffic delays because of the heavy fog, and those flying should also plan for delayed or cancelled flights. The forecaster recommended checking road conditions before driving and making sure fog lights were functional.
This follows another fog warning that was in place in London on Friday.
Recent weather context
It comes just days after England was battered with rain, leading to increased river levels in many parts of the country. Storms Austen and Boelo caused England to have its wettest week since October 2024.
Austen triggered an amber warning from the Met Office for strong winds and rain across Cornwall and parts of Devon on October 23, along with a yellow warning for much of central and southern England. Gusts reached nearly 80mph on the Isle of Wight, flights were cancelled, and thousands of homes were left without power.
Boelo arrived the following day, prompting an amber warning for wind over Scotland, with a yellow warning covering northern England. Much of the country remains officially in drought, with a severe drought in place across parts of the South West and Sussex.