Sadiq Khan has today (Monday, January 23) issued the highest air pollution alert for the capital, with parts of west London expected to be affected the worst.
The London Mayor has triggered a "very high" alert under his new air quality warning system, with Ladbroke Grove in North Kensington one of the areas registering a "black", or 10/10 reading.
Nearby Marylebone Road in Westminster is another to register the very high 10/10 reading for pollution levels.
Warnings are being issued at bus stops, tube stations and roadsides in the capital, and Mr Khan said everyone from the vulnerable to the physically fit may need to take protections to protect themselves from the “filthy air”.
The warning comes as swathes of the UK are suffering from very high or high levels of air pollution from pollutants known as particulate matter or PMs, coming from sources including traffic emissions which are failing to disperse in the still weather.
There are also 14 high red alerts for pollution in areas including Acton, Ealing and Harlesden.
Mr Khan, who also issued an alert just a few days earlier , said: “The shameful state of London’s toxic air today has triggered a "very high" air pollution alert under my new air quality warning system.
“This is the highest level air quality alert.
"Everyone, from the most vulnerable to the physically fit, may need to reduce physical exertion.”
He also urged people to use public transport if possible to help cut emissions and pollution, and asked people making car journeys to avoid engine idling .
He also promised to tackle the issue and implement measures to cut pollution .
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