The Commission for Air Quality Management (CAQM) on December 13 enforced Stage-III restrictions under the Graded Response Action Plan (GRAP) in Delhi-NCR as air quality deteriorated to ‘severe’ levels.

The capital’s 24-hour average Air Quality Index (AQI) stood at 349 on December 12 but surged to 401 by 10 am Saturday due to “slow wind speed, stable atmosphere and lack of dispersal of pollutants,” CAQM said in a statement. Advertisement

In response, authorities ordered schools up to Class 5 to shift to hybrid mode and imposed curbs on non-essential construction, demolition, mining, and stone crushing activities. Entry of older diesel goods vehicles has been banned in Delhi, and BS-III petrol and BS-IV diesel four-wheelers are restricted in key NCR cities including Gurugram, Faridabad,

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