http://www.independent.co.uk/environment/london-air-pollution-safety-levels-five-day-2017-air-quality-hourly-limits-nitrogen-dioxide-eu-kings-a7512901.html
London broke the annual limit for air pollution just five days into 2017, according to data from the capital’s main monitoring system.
A site on Brixton Road in south London surpassed hourly limits for nitrogen dioxide concentrations 24 times so far this year, breaking the European Union’s annual permitted limit of 18 breaches, according to provisional data on King’s College London’s Air Quality Network website. The pollutant come from diesel engines in cars, trucks and other sources.
“Road traffic is the biggest culprit, and diesel is the worst,” Jenny Bates, a campaigner at the environmental group Friends of the Earth, said in a statement.