Air quality in Delhi and nearby areas entered the "very poor" category on Thursday and is likely to turn "severe" over the next two days due to prevailing calm winds and increased incidents of farm fires.
The national capital's air quality index (AQI) was 312 at 7 am on Thursday, up from 304 at 4 pm on Wednesday, according to government's air quality monitoring and forecasting service SAFAR. It said the air quality in Delhi may enter the severe category in some parts of Delhi by Friday.
Greater Noida (340) and Noida (320) also recorded their AQI in the "very

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