Economy Delhi air quality turns ‘hazardous’ from Tuesday afternoon Updated : October 30, 2019 06:30 AM IST Surface winds are not stagnant since Monday and flushing out pollutants but they are likely to be slowing down during stable night hours. Post Diwali, the Delhi NCR region has been choked by high pollution levels after bursting of firecrackers. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.