Delhi Air Pollution: Thick Toxic Haze or Smog Chokes National Capital As Air Quality Index Remains in 'Severe' Category (Watch Video)
Air pollution levels can be high during the winter months for a number of reasons, including dust and vehicular pollution, dry-cold weather, stubble burning, burning crop residues after the harvest season, and commuting. Delhi Air Pollution: Thick Toxic Haze or Smog Chokes National Capital As Air Quality Index Remains in ‘Severe’ Category (Watch Video).