The Air Quality Index (AQI) value of Delhi stood at 450 on Sunday and it was almost the same, at 448, on Monday. On a scale of 0 – 500, an AQI value above 400 is considered to be severe.
from Hindustan Times - india http://bit.ly/2RjHGEE
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/ Foggy, polluted Christmas likely in Delhi; 2nd bout of cold wave expected
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