Delhi's Graded Response Action Plan (GRAP) has been enforced earlier than usual this year to address air pollution. Measures include banning polluting buses from entering the city at AQI Stage III, ...
GRAP is categorised into four stages based on Delhi’s air quality: Stage I — ‘Poor’ (AQI 201-300); Stage II — ‘Very Poor’ (AQI 301-400); Stage III — ‘Severe’ (AQI 401-450); and Stage IV — ‘Severe Plus ...
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