In the southern part of India, heavy rainfall is very likely in some places over Tamil Nadu, Puducherry and Karaikal. Thunderstorms accompanied by lightning are very likely here.

"A fresh western disturbance will obstruct the flow of icy winds from the north by 19th. Temperatures will rise," Mahesh Palawat tweeted.

Apart from Delhi, cold day conditions may prevail in isolated pockets of East Uttar Pradesh, Punjab, Haryana, Chandigarh, West Uttar Pradesh and northern parts of Madhya Pradesh and Bihar.

The weather forecast agency further predicted that cold day conditions will also continue to prevail in pockets over Punjab, Haryana, Chandigarh, Delhi and Rajasthan today but will gradually become less intense from tomorrow.

Due to the dip in the temperature and lack of sunlight, the fog has engulfed the region resulting in low visibility.

The increase in the toxic air in and around Delhi is causing problems for the residents, making them fall into a pit of lung-related diseases and also cardiovascular diseases.

Today, the overall air quality of Delhi was recorded at 218, with PM 10 at 155 and PM 2.5 at 67. People of the city expressed happiness over the improved air quality. "The pollution levels have definitely come down. The air is much cleaner today," said a resident of the city.

This was the third edition of the odd-even restrictions, a flagship scheme of the AAP government, on private vehicles in Delhi.

Air quality condition is likely to marginally improve by tomorrow (Friday), but a reasonable improvement to the 'very poor' is expected only by November 16 (Saturday).

Today, the minimum and maximum temperature of Delhi is hovering around 15 degrees Celsius and 29 degrees Celsius with the humidity at 47 per cent.