The final stage or Phase IV of the Graded Response Action Plan (GRAP) has been imposed in the National Capital Region as the Air Quality Index (AQI) dipped to the "severe" category. This phase is meant to be activated at least three days before the AQI surpasses the 450 mark in the capital.
The restrictive actions in the phases implemented before this continue to be in effect, along with the measures imposed after GRAP 'severe plus' category is invoked. The Commission for Air Quality Management (CAQM), a statutory body responsible for formulating strategies to combat pollution in the region, has asked Delhi and NCR states to implement all emergency measures, news agency PTI reported.