People wore facemasks to prevent the spread of the coronavirus despite temperatures rising above 30 degrees Celsius by 9 a.m. The capital continues to see new cases of coronavirus infection, with 161 people confirmed with the illness on Monday. Analysis of mobile phone data showed a 4 percent decrease from a month earlier in the flow of people at Shinagawa Station.

Shimbashi and Shinjuku stations in central Tokyo both saw drops of about 12 percent.