epa11728460 A construction site is seen amid heavy smog near New Delhi, India, 19 November 2024. According to the Central Pollution Control Board, the National Capital Region's Air Quality Index (AQI) labels New Delhi in the 'severe' category, and AQI in Delhi was recorded at 492 (severe plus) at 7 am Indian time. EPA/HARISH TYAGI

epa11728456 Commuters drive amid heavy smog near New Delhi, India, 19 November 2024. According to the Central Pollution Control Board, the National Capital Region's Air Quality Index (AQI) labels New Delhi in the 'severe' category, and AQI in Delhi was recorded at 492 (severe plus) at 7 am Indian time. EPA/HARISH TYAGI

epa11728457 Workers clean the road amid heavy smog near New Delhi, India, 19 November 2024. According to the Central Pollution Control Board, the National Capital Region's Air Quality Index (AQI) labels New Delhi in the 'severe' category, and AQI in Delhi was recorded at 492 (severe plus) at 7 am Indian time. EPA/HARISH TYAGI