At least 28 people were killed Tuesday in Syrian government air strikes on a village in northwestern Idlib province and a suburb of Damascus, a monitor said.
At least 18 people died in government raids on the village of Ehsim in northwestern Idlib province, activists on the ground said.
Assad kills 28 civilians but the toll was expected to rise because the raids had hit a market.
Most of Idlib province is now under rebel control, after an alliance of opposition groups including Al-Qaeda’s local affiliate evicted regime forces from their last strongholds.
Elsewhere, the activists said said at least 10 people, including two children, were killed in strikes on the rebel-held Damascus suburb of Douma on Tuesday.
In total, Assad kills 28 civilians with the toll expected to rise.
Another 50 people were wounded, and that the death toll was likely to rise because a number of those hurt were in serious condition and other residents were still missing under rubble.
An AFP photographer at a field clinic in the suburb saw the body of a young girl lying on a stretcher, with her hand protruding from under a makeshift shroud fashioned from a blanket.
Wounded people flooded into the clinic, with one man whose face was caked in white dust bleeding from the scalp through a gauze dressing.
Most of the floor was covered with the injured, some receiving treatment and others waiting, with the rare empty spaces smeared with blood.
Douma lies in the opposition bastion area of Eastern Ghouta, which has been subjected to continuous aerial bombardment for months.
Earlier in June, at least 24 people, including five children, were killed in government strikes and rocket fire on Douma.
More than 300,000 people have been killed in Syria since the conflict erupted in March of 2011.
AFP contributed to this article.