Schools shut in Delhi-NCR as air continues to be 'severe' for 3rd day, improvement...

The air quality index (AQI), as calculated by the Central Pollution Control Board (CPCB) at 7 am was 463. This was against the overall AQI reading of 456 on Wednesday.

from Hindustan Times - topnews http://bit.ly/2Oebgb6
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