Thick fog shrouded Delhi and its neighbouring areas this morning, reducing visibility to near zero and affecting road, rail and flight movement. The national capital is likely to receive light rainfall for two days beginning today owing to a western disturbance in the Himalayan region. According to Delhi airport sources, more than 50 flights were delayed due to the thick fog in Delhi. Some of these flights were diverted to Jaipur, Ahmedabad and Mumbai. The Delhi airport issued an advisory, urging passengers to contact their airlines for updated flight information.