Delhi AQI 2026: GRAP 3 restrictions imposed in Delhi-NCR; Check what is allowed and what is not. The air quality in Delhi has deteriorated into the ‘severe’ category, with the Commission for Air Quality Management (CAQM) imposing Stage III of the Graded Action Plan or GRAP due to the. GRAP Stage 3 has been imposed across Delhi-NCR as air quality turns severe.