Air quality dips on a Hazy Day: Moon of Karwa Chauth festival seen in sky as toxic smog covers the skyline of national capital region (NCR) and air quality deteriorates to the ''severe'' category at Noida, UP on the outskirts of New Delhi, India, on, Nov. 04, 2020. Smog is an ongoing severe air-pollution event in New Delhi and adjoining areas in the National Capital Territory of India. Photo Credit: Indian Photo Agency (InPA)