Shanghai under smog as pollution levels spike

Shanghai is suffering from heavy levels of air pollution, which has prompted the government to issue a warning against children and the elderly venturing outside. Warnings were also issued stating that anyone with health problems, such as respiratory conditions or heart problems, should also reduce time spent outside while smog persists.

The air quality index in the Chinese city measured higher than 300 at 1.41 pm (5.41am GMT) local time today (December 2nd). This is over ten times higher than the safe levels of air pollution recognised by the World Health Organisation (WHO), meaning that it is classed as "severe" on the six-level scale - the highest possible level. 

In terms of particulate pollution, PM2.5 pollutants - which measure less than 2.5 micrometres in diameter - were measured at 299.9 micrograms per cubic metre on the air pollution index. This type of pollution is the most damaging to human health as it can penetrate deeply into the respiratory system and has been linked to a number of illnesses, including lung cancer and heart disease. The levels of PM2.5 pollution fell back to 211.5 micrograms pcm after this spike, but this is still a potentially harmful amount.

PM10 air pollution - particles measuring less than ten micrometres - also spiked over 1.41 pm the weekend, reaching 362 micrograms pcm before also falling slightly. The limit in place for PM10 pollution is 150 micrograms pcm.

It is expected that the high levels of pollution and smoggy conditions will continue tomorrow (December 3rd) due to unaltered weather, which will mean the pollution particles are unable to disperse. A slight improvement in air quality is expected to occur on Wednesday (December 4th), due to a cold front heading towards the city.

Until the smog has lessened and air pollution index readings have dropped, people in the city are being advised to reduce outdoor activities so as to lessen any impact on health.