At this point, no change is planned in Obama's attendance, the official said.
Islamic State jihadists have claimed the series of coordinated attacks Friday by gunmen and suicide bombers who killed at least 128 people in scenes of carnage at a concert hall, restaurants and the national stadium.
French Foreign Minister Laurent Fabius said Saturday the climate conference would go ahead as planned.
"COP21 must be held," he said, using the conference's technical name, but he added that security would be increased.
Obama has championed reducing climate change, saying he hopes an ambitious and sustainable deal will come out of COP21.
Earlier this month Obama blocked the Keystone XL oil pipeline that Canada sought to build into the United States, ruling it would hinder the fight against climate change.
The November 30-December 11 climate talks take place under the UN Framework Convention on Climate Change.