Delhi recorded air pollution more than 17 times above an acceptable level as worsening smog triggered curbs on trucking and shuttered construction sites and schools.

Supreme Court has ordered the continuation of GRAP-4 restrictions in Delhi-NCR due to alarming air pollution levels, emphasising the urgent need for action to combat the deteriorating air quality

A bench of Justices Abhay S Oka and Augustine George Masih pointed out that there was a delay in implementation of preventive measures under stage 4 of the Graded Response Action Plan (GRAP) even after the Air Quality Index (AQI) touched alarming levels in the national capital.

The AQI at all monitoring stations stood between 1300 and 1600 - ‘hazardous’ category - at around 10 am on Monday, as per Swiss air technology company IQAir.

CAQM issues order as Delhi's AQI worsens, banning trucks, limiting vehicle entry, and suspending construction activities.

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,