Delhi and its adjoining areas have been covered under a blanket of thick smog since last morning and the air quality has plummeted to the 'Severe' category and the air quality index reported over 400 in several areas.
The Commission for Air Quality Management (CAQM) had called the early-morning dense smog an "episodic event" and said they expect the situation to improve by today but the dangerous levels of AQI have forced the CAQM to implement stage III of the Graded Action Response Plan. The measures will be implemented from 8 am tomorrow.
GRAP, implemented in the region during the winter season, actions in four stages: Stage I - 'Poor' (AQI 201-300); Stage II - 'Very Poor' (AQI 301-400); Stage III - 'Severe' (AQI 401-450); and Stage IV - 'Severe Plus' (AQI above 450).
GRAP II was enforced in Delhi in October after the air quality was recorded at over 300.
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