India, Nov. 12 -- Local, meteorological factorsare responsible forTamil Nadu's capital developing conditions similar to its notorious northern counterpart

Experts have discounted the theory that smog-laden air from Delhi could have caused similar conditions across the Vindhyas in Chennai.

"The air pollution that we are reeling under now is a cumulative effect and not sudden," city-based medical professional Ezhilan, said.

"The city has been expanding on one side. Much of its recent urban expansion has been southwards. There is a 30-fold increase in the population of motorised vehicles. Because of thousands of jobs in the Information Technology sector, the population too has increased rapidly," he said.

"The temperature has been fluctu...