New Delhi, Jan 6 (ANI): Speaking on dense fog which has enveloped the country, IMD Director General LS Rathore on Monday said that areas like Haryana, Delhi, UP, MP are highly affected by fog these days but in the coming days fog will lessen down in daytime but it will be there during the nights. He also added that after 9th January, UP and MP will be affected by rainfall and after that the fog will engulf these areas again.