The Tokyo Metropolitan Government reported 351 new cases of the coronavirus on Sunday, marking the 24th straight day of week-on-week declines in the daily tally.
Sunday's figure fell by 97 from a week earlier.
The seven-day average of daily cases for the capital through Sunday is 426.4, or 76.3 percent of the figure for the previous week.
Tokyo's total count now stands at 163,680.
Officials say 60 patients are in serious condition, two fewer than on Saturday.