Reference Data in Tokyo 18 indicators covering reference data for Tokyo. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree -2.92 % change on previous year 2025 down 5,327.1% 109th Cooling and heating degree days - Cities and FUAs — Change in cooling -6.09 % change on previous year 2025 down 648.9% 115th Cooling and heating degree days - Cities and FUAs, annual growth rate -6.71 % change on previous year 2025 up 48.7% 634th Cooling and heating degree days - Cities and FUAs — Change in heating -53.08 % change on previous year 2025 down 164.9% 796th Cooling and heating degree days - Cities and FUAs — Cooling degree 475.51 Degree days 2025 up 74.4% 226th Cooling and heating degree days - Cities and FUAs — Change in cooling 220.74 Degree days 2025 up 1,133.4% 40th Cooling and heating degree days - Cities and FUAs 1,257 Degree days 2025 down 4.2% 793rd Cooling and heating degree days - Cities and FUAs — Change in heating -260.88 Degree days 2025 down 26.4% 561st Precipitation - Cities and FUAs — Extreme precipitation days 33.02 Days per year 2024 up 64.6% 52nd Precipitation - Cities and FUAs — Change in extreme precipitation 10.6 Days per year 2024 up 547.8% 37th Dependency ratio - Cities and FUAs 39 Percentage of population aged 15-64 years 2020 up 29.1% 202nd Wind threats - Cities and FUAs — Exposure to wind threats 15.71 Percentage of area 2023 down 84.1% 181st Coastal flooding - Cities and FUAs — Built-up area exposure to 0.0589 Percentage of built-up area 2022 up 4.1% 197th Internet speed - Cities and FUAs — Uploading speed 6.7 Percentage of national value 2025 up 179.2% 572nd Internet speed - Cities and FUAs — Downloading speed 6 Percentage of national value 2025 down 61.8% 628th Correction coefficients outside the European Union (Duty stations) 83.9 Index 2025 down 11.4% 77th Purchasing Power Parities outside the European Union (Duty stations) 142 Purchasing power standard (PPS) 2025 up 9.6% 53rd Correction coefficients outside the European Union (Duty stations) 83.9 Index 2025 down 11.4% 78th