Delhi's air quality index on 2023's last day was recorded in the 'severe' category. Forecasts indicated that the toxic circumstances would probably last for at least three more days.
According to the Delhi Airport website, nine international flights and eight domestic flights flying out of Delhi and 11 flights flying into Delhi were delayed Monday morning.
Air quality in Sydney plummeted on Tuesday to levels among the world's worst as smoke from bushfires in the north blanketed the harbour city, taking large swathes into index ranges on par with New Delhi, one of the world's most crowded capitals.