Air traffic hit in Delhi, heavy fog likely from December

The smog that had enveloped on Sunday afternoon led to low visibility at IGI Airport, Delhi. According to a Met department official, "A western disturbance and cloud cover has contributed to lowering visibility."

As for the smog, pollution experts are not only pointing to high levels of the usual suspects — nitrogen oxides and ozone — but also the rising concentration of lesser-known volatile organic compounds (VOCs) like benzene, toluene, xylene, styrene and butadine. The weather has begun affecting Delhiites. A number of respiratory problems are on the increase and asthma patients need to be extra careful. Doctors say several viral and bacterial infections thrive in this weather which can lead to health complications. While road and rail transport is feared to get affected in the coming days, air traffic is severely hit at IGI. Since the secondary runway is closed when visibility falls below 2,000 metres, there is a long queue of planes to take off and land. A delay of anywhere up to an hour is routine, "The simultaneous use of runways was started to ease air traffic congestion. Now with only one runway in use, things are again very bad,"said an airline official.

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