London drivers face reduced visibility as Met Office issues yellow fog warning
The warning, active until 10 am on 1 November 2026, predicts visibility under 100 metres in some areas and advises motorists to check conditions and use fog lights.
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The Met Office announced a yellow fog warning for London on Sunday 1 November 2026. The alert, which remains in force until 10 am, covers the capital and a swathe of regions across England and Wales. Drivers in the city are told that dense fog could reduce sightlines to less than 100 metres, a condition that the forecaster described as likely to cause traffic delays.
Safety advice for motorists
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The weather service recommended that motorists inspect their fog lights and verify road conditions before setting off. It added that the fog may linger into the afternoon in some locations, so drivers should stay alert for sudden changes in visibility. As reported by the Standard, the Met Office warned that “visibility will vary from place to place with some dense fog patches bringing it down to less than 100 metres.”
Visibility will vary from place to place with some dense fog patches bringing it down to less than 100 metres.
Met Office, as quoted by the Standard
Impact on air travel
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Airlines operating out of London airports have been advised to expect possible delays or cancellations. Passengers are urged to check flight status before heading to the terminal and to allow extra time for security and boarding procedures.
Recent weather context
The fog warning follows a period of intense rainfall linked to storms Austen and Boelo. Those systems produced the wettest week in England since October 2024, with gusts near 80 mph recorded on the Isle of Wight. The storms also triggered amber wind warnings and left thousands of households without power.
What happens next
The Met Office will review conditions at 10 am and may extend the warning if visibility remains poor. Residents can follow updates on the Met Office website or local radio. Transport for London has not announced service suspensions, but drivers should anticipate slower traffic on major routes such as the North Circular and A1.
Questions this report answers
+What does the yellow fog warning mean for drivers in London?
The yellow warning signals that fog may reduce visibility to under 100 metres in some areas. Drivers should use fog lights, travel at reduced speed, and monitor road conditions until the alert expires at 10 am.
+How low can visibility be in the worst fog patches?
The Met Office reported that the densest fog could bring sightlines down to less than 100 metres. This level of visibility increases the risk of collisions, especially on busy urban roads.
+Which recent storms contributed to the current weather situation?
Storms Austen and Boelo, which struck in late October, delivered the wettest week since October 2024 and produced gusts close to 80 mph on the Isle of Wight. Their heavy rain and wind set the stage for the fog developing on 1 November.
+When does the fog warning end?
The current yellow fog warning is scheduled to finish at 10 am on Sunday 1 November 2026. The Met Office will reassess conditions at that time and may issue a new advisory if visibility remains poor.
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