Delhi’s air quality index (AQI) slumped deeper into “very poor” levels on Monday, according to the Central Pollution Control Board’s (CPCB’s) daily air quality bulletin, prompting authorities to invoke the second stage of the Graded Response Action Plan (Grap) that mandated some curbs on polluting activities.

As the air quality worsened in the Delhi-NCR region, the Commission for Air Quality Management (CAQM) invoked stage two of the anti-pollution plan GRAP.

On Wednesday 8 am, Delhi’s air quality had dipped to 354, which is in the ‘very poor’ category. Some of the measuring stations recorded AQI over 400, which is in the ‘severe’ category.

New Delhi's air quality deteriorated to 'very poor' with an overall AQI of 363, while areas like Jahangirpuri and Vivek Vihar entered the 'severe' category. The city is under stage two of GRAP, with potential school closures if pollution worsens.

Delhi's Air Quality Index (AQI) rose to 327 on Tuesday, with Anand Vihar recording 417 in the 'severe' category. Pollution is expected to stay high due to shifting wind directions and increased stubble burning.

The AQI of Delhi on October 23 slipped into the ‘very poor’ category and was recorded at over 340 in majority of the regions in the capital.

A new study reveals how stubble burning in Punjab and Haryana affects Delhi's air quality. Despite a decrease in farm fires, Delhi's AQI remains critically high, highlighting the need for comprehensive interventions and public awareness to tackle air pollution effectively.

Delhi's air quality remained in the ‘very poor’ category on Wednesday, with the Air Quality Index (AQI) reaching 349, as per data from the System of Air Quality and Weather Forecasting And Research (SAFAR).