By the end of the first five days of 2017, the UK air pollution limits had been exceeded.
Green Party co-leader Caroline Lucas calls this issue "a public health crisis that is being wilfully ignored by those in power".
AIR, an independent short film from Lark Rise Pictures about the impact of air pollution, was screened at London City Hall last week, where Sadiq Khan made a keynote speech about new air quality plans for the city.
There are interviews with researchers from Queen Mary University London and King's College London, giving us a much-needed reality check on a global issue.
Watch, inform yourself and find out how best to reduce your air pollution footprint.