二酸化窒素
In 2017, an automatic monitoring station in Blackwall found that local air quality failed to meet [[Department for Environment, Food and Rural Affairs|UK National Air Quality Objectives]], recording an annual average [[Nitrogen dioxide|Nitrogen Dioxide]] (NO2) concentration of 56 μg/m3 ([[microgram]]s per [[cubic metre]]). The National Objective is set by the government at 40 μg/m3.