Delhi Pollution: The Commission for Air Quality Management (CAQM) on Saturday enforced Stage IV of the Graded Response Action Plan (GRAP) across Delhi-NCR after air pollution levels rose sharply and entered the severe category.

AQI Crosses 400 Mark

Air quality in Delhi and surrounding areas deteriorated rapidly on January 17. The Air Quality Index (AQI), which stood at 400 at around 4 PM, climbed further to 428 by 8 PM. Officials said the sharp rise was linked to unfavourable weather conditions, including western disturbance, low wind speed and poor dispersion of pollutants.

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In a statement, CAQM said the worsening trend prompted the Sub-Committee on GRAP to unanimously decide on invoking Stage IV measures with immediate effect across the entire NCR, in addition to the restrictions already in force under Stages I, II and III.

Delhi Pollution: Why Stage IV Was Invoked

The air quality body said the decision was taken as a preventive step to stop further deterioration. Pollution levels have remained high for several months in the region, with repeated spikes during winter due to stagnant atmospheric conditions. Earlier on Friday, Stage III curbs were imposed after pollution levels rose sharply.

Delhi Pollution: Key Restrictions Under GRAP Stage IV

Under Stage IV measures, the following restrictions will come into force across Delhi-NCR:

  • Entry of trucks into Delhi will be banned, except for vehicles carrying essential goods and those running on CNG, LNG, electric power or compliant with BS-VI norms.

  • All construction and demolition activities will remain suspended, including work on highways, roads, flyovers and major infrastructure projects.

  • Schools will function in hybrid mode for Classes 6 to 9 and Class 11, allowing both online and offline classes where possible.

  • Closure of colleges and other educational institutions may be considered depending on pollution levels.

  • Restrictions may be imposed on non-essential commercial activities.

Health Advisory Issued

Authorities have advised children, senior citizens and people with serious health conditions to stay indoors and avoid outdoor exposure. Pollution control boards and enforcement agencies across NCR have been asked to strictly implement and monitor the measures to prevent further decline in air quality.

CAQM said the situation will be reviewed regularly based on pollution trends and weather conditions.


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