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What Causes the Smog During Winters?

Feb 08, 2018

The advent of winters has brought the problem of smog in the metropolitan cities of northern India. Life in the National Capital Region is especially threatened by winter smog every year. This dense white fume is a result of several environmental and manmade factors.

Here are the things that constitute winter smog,

  • Particulate Matter - Generally known as PM2.5, it is a very fine mix of dust particles and toxic gases from vehicular emissions.
  • Smoke - From household, industrial and vehicular activities.
  • Winter Fog - The cloudy concentration of water droplets at low altitude during winter months.

While particulate matter and smoke are present in the air during summers too, their effect on our health becomes more apparent during winter due to the lack of upward movement from the colder winter air. Thus, these particles are retained in the ambient air and mix with the fog to cause smog.

The main contributors to the release of PM pollutants in the air during winters are,

  • Vehicular emissions, industrial smoke and household smoke.
  • Smoke from crop residue burning in the northern states of Haryana, Punjab, Rajasthan and Uttar Pradesh.
  • Increase in construction activities during winters.
  • The beginning of festive season and festivals like Diwali when people burst crackers to celebrate.


Measures Against the Threat of Winter Smog


You can take the following steps to protect yourself from the ill effects of environmental air pollution.

  • Travel in closed transportation and use a portable air purifier for your vehicle.
  • Use PM2.5 masks for protection when out in smoggy conditions.
  • Buy a home air purifier for indoor protection from air pollution. HEPA air purifiers remove 99.9% of indoor air pollution and are considered the best air purifiers for home and office.
  • Buy indoor plants such as aloe vera, basil and spider plant to get some clean air circulation inside your home.

Livpure air purifiers are considered among the top air purifiers in India. You can buy Livpure air purifiers online and offline and get a free installation and demo service. To know more about air purifiers, visit

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