The Health Minister says we need to do everything we can to avoid another lockdown.
Cavan, Monaghan and Donegal will move to level 4 from midnight, meaning all non-essential retail will close.
The rest of the country will remain on level three, but with additional restrictions coming into effect.
Household visits are banned, while only 6 people from two households can meet outdoors.
Minister Stephen Donnelly is urging people to adhere to the restrictions.
Meanwhile the Sinn Fein TD for Donegal, Padraig Mac Lochlainn, says government needs to step up and help businesses and workers:
