The average annual nitrogen dioxide (NO2) levels in London have been declining in recent years. In 2016, NO2 levels at roadside sites in central London averaged 91 micrograms per cubic meter. By 2019, this had fallen to 61 micrograms per cubic meter, a 33 percent reduction. In 2019, the Ultra Low Emission Zone (ULEZ) was introduced in central London. Operating 24 hours a day, seven days a week, drivers of vehicles who enter this zone which do not meet ULEZ emission standards are required to pay a daily charge.
Annual average nitrogen dioxide (NO2) emission levels in London from 2016 to 2019, by zone and site type
(in micrograms per cubic meter of air)
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Greater London Authority. (October 1, 2020). Annual average nitrogen dioxide (NO2) emission levels in London from 2016 to 2019, by zone and site type (in micrograms per cubic meter of air) [Graph]. In Statista. Retrieved July 02, 2022, from https://www.statista.com/statistics/789138/average-annual-nitrogen-dioxide-levels-london-uk/
Greater London Authority. "Annual average nitrogen dioxide (NO2) emission levels in London from 2016 to 2019, by zone and site type (in micrograms per cubic meter of air)." Chart. October 1, 2020. Statista. Accessed July 02, 2022. https://www.statista.com/statistics/789138/average-annual-nitrogen-dioxide-levels-london-uk/
Greater London Authority. (2020). Annual average nitrogen dioxide (NO2) emission levels in London from 2016 to 2019, by zone and site type (in micrograms per cubic meter of air). Statista. Statista Inc.. Accessed: July 02, 2022. https://www.statista.com/statistics/789138/average-annual-nitrogen-dioxide-levels-london-uk/
Greater London Authority. "Annual Average Nitrogen Dioxide (No2) Emission Levels in London from 2016 to 2019, by Zone and Site Type (in Micrograms per Cubic Meter of Air)." Statista, Statista Inc., 1 Oct 2020, https://www.statista.com/statistics/789138/average-annual-nitrogen-dioxide-levels-london-uk/
Greater London Authority, Annual average nitrogen dioxide (NO2) emission levels in London from 2016 to 2019, by zone and site type (in micrograms per cubic meter of air) Statista, https://www.statista.com/statistics/789138/average-annual-nitrogen-dioxide-levels-london-uk/ (last visited July 02, 2022)
