Pollution level in Delhi remains 'severe' .
Though the situation today is better than past few days, the quality of air remains to be in the 'severe' category .
Meanwhile, 64 trains are running late, 14 rescheduled and two have been cancelled in view of the thick smog hung over the city .
In the wake of the soaring pollution level in the city, the Health Ministry on Wednesday issued a pollution advisory, asking citizens to drink plenty of water and avoid areas with smoke or heavy dust .
The car rationing system will be implemented in the national capital from November 13 to 17 .
The decision has been taken in view of the prevailing air pollution in Delhi and parts of North India .
All schools in the national capital will remain shut till Saturday .
The Delhi Metro will also increase the frequency of trains to encourage people to use the public transport .
The city's air quality worsened ahead of winter as cooler air traps pollutants near the ground, preventing them from dispersing into the atmosphere . (ANI)