GRAP Stage 4 anti-pollution measures have been imposed in Delhi-NCR and will come into force from Monday as air quality in Delhi has plunged to the "severe" category.

The deteriorating air quality in Delhi has prompted the enforcement of GRAP Stage 4 restrictions starting Monday, as the city’s Air Quality Index (AQI) hit 457 at 7 PM on Sunday, crossing into the “severe plus” category. These measures aim to curb emissions and mitigate health risks as pollution levels reach alarming highs.

CAQM imposes construction ban, restricts BS-III and BS-IV vehicles in Delhi-NCR to combat severe air pollution.

The Indian capital closed all schools, banned lorries and halted construction work on Monday as air quality in New Delhi plummeted to its worst level this year, with a thick layer of yellowish haze engulfing the city of 22 million.

Delhi and nearby regions have been enveloped in a dense layer of smog, causing the air quality to fall into the “Severe” category with AQI readings surpassing 400 in multiple locations.

Air quality in northern India has worsened over the past week, with New Delhi's AQI recording a reading of 465, classified as "severe plus category", on Sunday evening due to unfavourable meteorological conditions,

In Delhi NCR, GRAP Stage 4 was implemented by the Commission for Air Quality Management (CAQM) at 8 a.m. today after the Air Quality Index (AQI) fell into the "severe plus" category. This decision was reached following an urgent meeting of the GRAP subcommittee on November 17,