Speaking to the media here, Congress spokesperson Abhishek Manu Singhvi also targeted Delhi Chief Minister Arvind Kejriwal on the issue, saying there was a mutual blame game in which people in the national capital were suffering.
Targeting Modi, Singhvi said he keeps talking of "Swachch Bharat" but the air quality of Delhi and several other cities was going down.
"There is an emergency as far as pollution is concerned. Delhi is the world's most polluted mega city," he added.
Delhi and its neighbouring region on Monday experienced first smog of the season with air pollutants many folds higher than the permissible limit. The air quality was in the "severe-plus" or "emergency" category.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)