Delhi air pollution surges to emergency levels
by Reuters in Delhi from on (#466B5)
Air quality index at 12 times US government-recommended level and visibility low
Delhi residents woke to a thick, grey smog on Thursday as air pollution in the Indian capital surged to emergency levels.
The state-run Central Pollution Control Board's air quality index, which shows the concentration of poisonous particulate matter known as PM 2.5, stood at 440, up from 430 on Wednesday and about 12 times the US government-recommended level of 35.
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