Delhi's air quality worsens; visibility drops below 50 meters; fog disrupts rail traffic, derails 13 trains

Railways said that the Rewa-Anand Vihar Superfast Express, Guwahati-New Delhi Express and Hyderabad-Delhi-Telangana Express were delayed by two hours each owing to low visibility due to fog.

from Latest News India on Firstpost http://bit.ly/2FQ3e6B