Ozone (1)

MQT on 2017-09-14
Session date: 
September 14, 2017
Question By: 
David Kurten
Asked Of: 
The Mayor


Have you considered the negative effects of tropospheric ozone in your strategy for improving air quality?


Answer for Ozone (1)

Answer for Ozone (1)

Answered By: 
The Mayor

As with the rest of the UK, London is compliant with the legal limit for Ozone.

Ozone is a secondary pollutant which is not directly emitted by human activity; it is produced by the effect of sunlight on NOx and volatile organic compounds (VOCs) from vehicles and industry.

The Environment Agency and London Boroughs regulate emissions of VOCs from industry, and significant reductions are continuing to be achieved under the European Solvent Emissions Directive.

My environment strategy will improve air quality and reduce dangerous levels of NOx emissions, which will in turn reduce the amount of locally produced Ozone, lowering levels of this pollutant and the risk to Londoners' health.

Ozone can travel long distances, and significant contributions to London's Ozone levels can come from national or international sources. This is why, even as the UK leaves the EU, close working with European partners through sharing best practice and coordinated action is also essential.