New Delhi: At least 33 trains were delayed, five rescheduled and three cancelled due to low visibility and operational reasons.
Also Read: Delhi air quality continues to remain in 'very poor category'
The air quality in the Delhi-National Capital Region (NCR) returned to "very poor" levels with an AQI of 335 on Friday. The national capital has been experiencing dense smog for about a month.
However, Delhi witnessed the cleanest day on Thursday when the AQI fell to 288 in the "poor" category.
Also Read: Delhi smog: Trains delayed, cancelled due to low visibility
However, level started to rise in the evening when air quality fell to "very poor" due to a fall in temperature.(ANI)