Experts will discuss if Boris Johnson is doing enough to improve London's air quality at a meeting of the London Assembly's Environment Committee later this morning.
Guests including the Mayor's Environmental adviser will answer questions from the Committee on Boris' plans to reduce air pollution.
The Mayor's measures include plans to ensure that by 2020 the vast majority of vehicles in the capital's centre during the working day emit low or zero emissions.
He has also suggested plans to introduce an Ultra Low Emissions Zone in central London.
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Fresh with sunny spells replacing early murkiness.
A bright and sunny day tomorrow, but feeling distinctly cool and chilly tonight.