Delhi air pollution surges to emergency levels — Respro® Bulletin Board

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 […]

via Delhi air pollution surges to emergency levels — Respro® Bulletin Board

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