New Delhi, Jan. 20 -- In view of the deteriorating air quality in the national capital, the Commission for Air Quality Management (CAQM) on Tuesday invoked measures under Stage-IV of the Graded Response Action Plan (GRAP) across Delhi and the National Capital Region.

According to data released by the Central Pollution Control Board (CPCB), while there was a marginal improvement compared to Monday morning, when the AQI was in the 'severe' category at 418.

Several areas in Delhi reported alarmingly high AQI levels. Anand Vihar and Ashok Vihar both recorded AQI readings of 444, while Wazirpur registered 446. Other pollution hotspots included Punjabi Bagh (437), RK Puram (421), Bawana (418), ITO (414), Chandni Chowk (412) and Dwarka Sector ...