London Air has issued the following urgent health warning for HIGH levels of pollution along main roads and locations such as Dulwich Village:
An area of high pressure over the UK is resulting in calm, settled and cold conditions and poor dispersal of local pollutants.
Thursday is forecast to be slightly less cold with winds picking up a little which should lead to the currently elevated pollution levels clearing during the day. However, another cold night tonight with light winds is likely to result in further ‘moderate’ nitrogen dioxide at busy London roadsides on Thursday morning before conditions start to improve. There is also a chance of further ‘high’ and ‘moderate’ PM10 and PM2.5 if pollution is slow to clear.
Friday, early mist and fog will slowly clear to leave a mainly cloudy day with the possibility of patchy light rain in the east later. Even lighter winds than of late, and the early mist will likely cause another day of pollution build-up, escalated by the already elevated pollution levels. Consequently, ‘Moderate’ levels of nitrogen dioxide are expected to occur close to busy road locations.
Furthermore, air will begin to arrive from the North-East later in the day and may import some polluted air as it passes near to industrialized areas of Western Europe. This incoming air will add to London’s local pollution burden and is likely to result in ‘Moderate’ levels of PM10 and PM2.5 particulates.