WorldAir quality index of Europe’s major cities May 20: London’ very good’TNT DeskMay 20, 2013May 20, 2013 by TNT DeskMay 20, 2013May 20, 2013 LONDON: Below is information on the current background air quality in some of Europe’s major cities based on data taken from AirQualityNow and recorded at 10:40 am...