At around 0900 IST, Brent North Sea crude for July delivery was up 33 cents at USD 50.07 a barrel while US benchmark West Texas Intermediate was trading 29 cents higher at USD 49.85.
The USD 50 price point is a key level and traders are watching to see if it can be sustained.
The gains came as markets digested news that US commercial crude oil inventories fell by 4.2 million barrels in the week to May 20, according to US Department of Energy data.
Canada's central bank had also announced yesterday that the fires would impact the country's economic output numbers.
"News about the US inventory, coupled with Canada's announcement gave prices the boost it needed to push past the USD 50 mark," CMC Markets trader Alex Wijaya told AFP.
Both pricing standards have been edging close to the USD 50 mark for a fortnight but a strong US dollar had curtailed gains.
A firmer greenback, which has been performing stronger against major currencies, makes dollar-priced commodities like oil more expensive, hampering demand.
Aside from the stronger dollar, major exporter Iran has also vowed to keep up oil production after the lifting of Western sanctions in January, further fuelling the supply glut.
"The remarkable over 80 per cent rally in oil since earlier this year may have been overdone, as the underlying macro conditions have not changed proportionally," IG Markets analyst Bernard Aw said in a client note.
"This suggested that speculative trades have driven up the price these months, and may not be sustainable."
The global oil market nosedived from above USD 100 a barrel two years ago to around USD 27 in early 2016, plagued by a stubborn glut.
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