Canada had its warmest year on record in 2010, according to the country’s environmental agency, with the biggest impact seen in the Arctic region.

The national average temperature for the year was 3 degrees Celsius above normal, based on preliminary data, according to a report put on Environment Canada’s website on Monday. That made it the warmest year since nationwide records began in 1948.

Most areas of the northern territory of Nunavut and of northern Quebec were at least 4 degrees above normal, while the Arctic tundra region was 4.3 degrees above normal. Along with the Arctic tundra, the Arctic mountains and fiords, the northeastern forest and Atlantic regions also had the warmest year on record.