Key points from article :
EU safe limit for NO2, stated by the WHO, is an average of 40µg/m3 per year.
Victoria Embankment Gardens was 59.8, Parliament Square was 58.3 and Green Park was 49.2.
City of London, Westminster, Camden, Kensington and Chelsea and Islington — all breached safe levels.
Prolonged exposure to high levels of NO2 can damage the lungs, brain, cause childhood asthma.
City-wide study of 4,470 parks found that potentially thousands of children and Londoners are at risk.
Study was published in the International Journal of Environmental Research and Public Health.
