Air Quality Commissions Directions on Piped Natural Gas(PNG).

24 December 2020.


The Commission of Air Quality Management has stressed the need to switching over of all industries in Delhi NCR to Piped Natural Gas (PNG).According to it  the industrial sector is one of the major contributors to  pollution of air.


  • DPCC (Delhi Pollution Control Committee), Indraprastha Gas Limited and GAIL (Gas Authority of India Limited) are to provide required assistance.
  • The commission has identified 1,644 industrial units spread across fifty industrial areas in Delhi to switch over to Piped Natural Gas.
  • The commission directed the Delhi Pollution Control Committee to inspect and identify industries using unapproved fuels and take stringent penal actions in case of non-compliances
  • The deadline of switch over is January 31, 2021.
  • According to SAFAR(The System of Air Quality and Weather Forecasting and Research ) operating under Ministry of Earth Science recently announced that the air quality of the national capital  deteriorated.
  •  It has become“Very Poor” category, with an overall Air Quality Index (AQI) score of 373.
  • The Surface-level winds are low and are likely to slow down further .
  • The Surface Winds are the winds blowing near the surface of the earth.
  • It is measured using Anemometer.
  • This will create conditions for the formation of Radiation fog.

What is Radiation Fog?

  • Radiation Fog forms when all the solar energy exits the earth and allows the temperature to meet up dew point.
  •  This fog forms overnight as the air near the ground cools and stabilizes.
  • Of all the different types of fog, Radiation Fog is the most common fog in India.

How is Radiation Fog formed?

It is formed when the ground cools due to outgoing radiation in the night. Also, there should be sufficient moisture in the atmosphere for radiation fog formation to cause condensation.

Radiation fog if formed mainly during winter when Northern India gets winter rains.



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