Even With PM 2.5 Levels Well Over 500, A Week Of Foul Air Doesn't Merit Top Alert Level In Beijing
Public anger continued to rise in Beijing yesterday at the city government's failure to issue a top-level smog alert after days of heavy pollution, though the air started to clear in the evening as a cold front brought rain and wind.
The Beijing Environmental Bureau removed an orange alert for smog - the second in a four-tier system - that had been in place since Friday, as the official Air Quality Index dropped from above 500 to about 460 at 5pm. At the US embassy, the PM2.5 reading - which measures tiny pollutant particles that are the deadliest - dropped from 551 micrograms per cubic metre at noon to 446 in the afternoon, still a hazardous level.
The city's meteorological centre has issued 12 smog alerts since February 20. Nine were yellow alerts, the third-highest on the scale, which means people must stay indoors; three were orange, which require a halt to construction, barbecues and fireworks. But Beijing has been under public pressure to issue the highest alert - red - which calls for measures such as closing schools to minimise the impact on health.
A school affiliated to Peking University suspended some classes on Tuesday and Wednesday, though the education committee ordered them to resume yesterday, China National Radio and the Beijing News said.
EDIT
http://www.scmp.com/news/china/article/1435892/public-anger-beijing-authorities-fail-post-highest-smog-alert
= new reply since forum marked as read
...clear it all right on up. 
