Published Monday, November 23, 2020 5:19AM EST
Last Updated Monday, November 23, 2020 5:20AM EST
It means that for at least the next 28 days, non-essential retailers can only offer curbside pickup, while restaurants are closed to all but takeout and delivery orders in the two COVID-19 hot spots.
Personal services have also been forced to close, but schools and child-care centres remain open.
Premier Doug Ford announced the move on Friday, but it didn't come into effect until 12:01 a.m. today.
That gave residents of Toronto and Peel the chance to stock up over the weekend -- flooding local malls, even as they extended hours in an effort to prevent too many people from coming at once.
While Toronto and Peel face the strictest measures, other areas of the province are also seeing rules tighten.
Durham Region and Waterloo joined York Region in the red classification today. The rules limit restaurants, gyms and food courts to 10 indoor patrons with social distancing, with even tighter restrictions on private gatherings.
The areas around Huron, Perth, Simcoe, Muskoka, and Windsor-Essex have moved to the orange classification, which caps gatherings at staffed businesses to 50 people indoors, or four per table at restaurants.