A thick toxic haze or 'smog' returned to Delhi, Noida, Gurugram and surrounding places this morning - after people burst crackers on Diwali night, leading to heavy pollution all across the National Capital Region. For further clarity on the weather forecast, Vice President of Climate Change @SKYMETWEATHER Mahesh Palawat, speaks to NDTV's Parmeshwar Bawa on whether the pollution levels are likely to improve in Delhi NCR? any rain on the radar for Delhi NCR and whether any usual temperature drops are expected in North India this week.