The Tokyo Metropolitan Government reported 448 new cases of the coronavirus on Sunday.
The figure is 87 fewer than a week ago, and marks the 17th straight day of week-on-week declines.
The seven-day average of daily infections through Sunday is 558.6, or 86 percent of the figure for the previous week.
Tokyo's total count of coronavirus infections now stands at 160,695.
Officials say 77 coronavirus patients are in serious condition, one fewer than on Saturday.
Tokyo officials did not confirm any deaths from the virus on Sunday.