According to Environment Canada, the mercury hit 29 at 2pm and that hasn't happened since 1949.
Meteorologist Claude Cote tells CHSJ News we can expect the heat wave to last until Sunday.
He says the eastern Ontario, Quebec, the Maritimes and the New England states are experiencing a hot humid air mass with temperatures a few degrees above normal.
Cote says the hot spot in the province and the country is Miramichi at 32 degrees.
The Fredericton area is under a heat warning where in the humidex it feels like 35 in the humidex.
It's so hot the changing of the guard ceremony at Officer's Square was cancelled.
