New Delhi, Oct 13 (PTI) Delhi’s air quality worsened to the ‘poor’ category on Sunday, the day after Dussehra, with the Centre deciding to closely monitor the situation before taking anti-air pollution measures under Stage 1 of the Graded Response Action Plan (GRAP). Effigies of demon king Ravana, his brother Kumbhakarna and son Meghnad packed […]