New Delhi, Dec. 18 -- Large parts of the capital were blanketed by a dense layer of toxic smog, significantly reducing visibility and causing discomfort for residents. RK Puram was shrouded in thick smog, with an AQI of 374, placing it in the 'very poor' category, according to CPCB.

A thick layer of smog also engulfed areas around Jawaharlal Nehru Stadium, with an AQI reported to be 349, placing the area in the 'very poor' category. The AQI around the Najafgarh area was a bit low, and reported to be 284, though it was surrounded by a toxic smog as well, according to the CPCB data.

CAQM (Commission for Air Quality Management) has invoked all GRAP Stage-IV measures in Delhi-NCR to control pollution levels in the capital.

A thick layer of...