Private gatherings of up to 10 indoors and 25 outdoors can resume, as can supervised public events of up to 50 indoors and 100 outdoors.
The other four health units in eastern Ontario are green.
Amended Stage 2 closures in Ottawa, Toronto and Peel Region came into effect on October 10. York Region subsequently faced similar restrictions. With the exception of Toronto, which will wait until the weekend of November 14, those regions will now turn orange.
28 new cases in Ottawa
The capital reported just 28 new cases of COVID-19 on Tuesday, less than 3% of the 1,050 new cases reported in Ontario – a one-day pandemic record for the province.
The majority, about 80%. 100, is in the Toronto area.
Ottawa Public Health (OPH) has declared 58 more cases resolved and is reporting two more deaths. About two-thirds of the latest cases in Ottawa involve people over 40, including eight over 80.
A total of 7,225 Ottawa residents have now tested positive for COVID-19, including 718 known active cases, 6,177 resolved cases and 330 deaths.
Fifty-two patients with COVID-19 are currently hospitalized in Ottawa for treatment, including four in intensive care.
Currently 2.8% of COVID-19 tests in Ottawa come back positive, and PHO learns of these results within 48 hours 78% of the time.
Elsewhere, the Outaouais has 31 new cases of COVID-19, according to Quebec health officials.