The Centre’s panel on Delhi-NCR’s air quality on Wednesday invoked curbs under stage 3 of the Graded Response Action Plan (GRAP) amid a sharp rise in pollution due to unfavourable meteorological conditions, according to an official order. The Centre’s panel on Delhi-NCR’s air quality on Wednesday invoked curbs under stage 3 of the Graded Response Action Plan (GRAP) amid a sharp rise in pollution due to unfavourable meteorological conditions, according to an official order. Zee News :Business