Dense fog blanketed the national capital on Wednesday and affected railway operations with around 12 trains being affected due to low visibility conditions.
The list of the delayed trains included Puri-New Delhi Purushottam Express, Howrah-New Delhi Poorva Express, Bhagalpur-Anand Vihar Garib Rath Express, Varanasi-New Delhi Kashi Vishwanath Express and New Jalpaiguri-New Delhi Express. Most of the trains were running late between two to three hours.
With Delhi already being shrouded in a blanket of fog, the city's air quality is also on the poor side, with the index touching the 'severe' category.
According to System of Air Quality and Weather Forecasting And Research (SAFAR), the overall Air Quality Index (AQI) was recorded at 402 till 8 am, which fall in the 'hazardous' or 'severe' category.
The Air Quality Index between the range of 51 to 100 is considered as satisfactory, 101-200 is moderate, 201-300 falls under the category of poor. 300-400 is considered as 'very poor' and range between 401-500 falls under the category as 'hazardous'.
Within the national capital, the Air Quality Index of most places clocked in the 'severe category'. At Dhirpur, Delhi University, Pitampura, Chandni Chowk and Mathura Road, the index clocked at 425, 539, 482, 442, and 433, respectively.
The Air Quality Index at IGI Airport, Pusa Road and Lodhi Road clocked in the 'very poor category' with the index at 363, 319 and 308, respectively.
The minimum temperature on Wednesday was recorded at 6.5 degrees Celsius, one notch below the season's average.
The maximum temperature on Tuesday was recorded at 23 degrees Celsius, three degrees above normal, while the minimum temperature settled at 4 degrees Celsius, three degrees below normal, as per the India Meterological Department (IMD).
As temperatures dipped in Delhi and the National Capital Region (NCR), the homeless people, who suffer the most in the chilly weather season, continued to turn towards crowded night shelters in different parts of the city to escape the icy cold winds.
The India Meterological Department said an active western disturbance is very likely to cause fairly widespread rain and snow over western Himalayan region and isolated rainfall over Punjab and northern parts of Haryana during the next 24 hours.
"Likely cloud cover and enhanced humidity could lead to further gradual increase in night minimum temperatures over parts of northwest India, thereby reducing the severity of cold wave conditions during next 24 hours. However, dense fog conditions are likely to occur during late night to morning hours over these regions, especially on January 2 and 3," the weather agency said in a bulletin.
The India Meterological Department further said that another active western disturbance is likely to cause widespread rain and snow with isolated heavy falls over western Himalayan region and scattered to fairly widespread rainfall with isolated hailstorms over parts of Punjab and Haryana, Chandigarh and Delhi on January 4 and 5.
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