The Tokyo Metropolitan Government confirmed 154 new cases of the coronavirus on Monday.
It is the first time in about six months that the daily count has fallen below 200.
The figure is down 148 from a week ago.
The seven-day average up to Monday is 341.6. That's 44.3 percent of the average of the previous seven-day period.
The cumulative number of confirmed cases in the capital now stands at 374,683.
Tokyo officials say 11 people with the virus died on Monday, bringing the total death toll for Tokyo to 2,883.
A total of 125 people were seriously ill as of Monday, down four from the previous day.