He has been very clear on the issue, here are several quotes:
Pope Francis
respondedthat “abortion is more than an issue. Abortion is murder.”
“Scientifically it’s a human life. The textbooks teach us that. But is it right to take it out to solve a problem? This is why the Church is so strict on this issue because accepting this is kind of like accepting daily murder,” Francis
said.
..
The pope has said that abortion of children who are sick or disabled is like Nazi eugentics “but with white gloves.”
“I have heard that it is in fashion, or at least customary, in the first months of pregnancy to have certain exams, to see whether the baby is not well, or has some problems. The first proposal in that case is: ‘Shall we do away with it?’ The murder of children,” Pope Francis said in a speech a family association.
“In the last century the entire world was scandalized over what the Nazis were doing to maintain the purity of the race. Today we do the same thing, but with white gloves,” Pope Francis
said.
..
When asked about abortion for pregnant women amid the Zika virus scare, Pope Francis responded that abortion is “an absolute evil” and against doctors’ Hippocratic oath.
“Abortion is not the lesser of two evils. It is a crime. It is to throw someone out in order to save another. That's what the Mafia does. It is a crime, an absolute evil,” the pope
said in his in-flight press conference returning from Mexico.
“Abortion is not a theological problem. It is a human problem. It is a medical problem. You kill one person to save another, in the best case scenario. … It's against the Hippocratic oaths doctors must take. It is an evil in and of itself,” he said.
…
Is that clear enough?