Reference Data in Tallinn 14 indicators covering reference data for Tallinn. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 2.11 Degree days 2025 down 69.4% 1189th Cooling and heating degree days - Cities and FUAs — Change in cooling -13.56 Degree days 2025 down 54.5% 766th Cooling and heating degree days - Cities and FUAs 2,407 Degree days 2025 down 17.1% 201st Cooling and heating degree days - Cities and FUAs — Change in heating -1,137 Degree days 2025 down 77.4% 1315th Precipitation - Cities and FUAs — Extreme precipitation days 0.5719 Days per year 2024 — 1264th Precipitation - Cities and FUAs — Change in extreme precipitation -0.7042 Days per year 2024 up 44.8% 1014th Dependency ratio - Cities and FUAs 28.6 Percentage of population aged 15-64 years 2025 up 4.8% 657th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0.0111 Percentage of built-up area 2022 down 34.9% 249th Internet speed - Cities and FUAs — Downloading speed 12.6 Percentage of national value 2025 down 61.2% 405th Internet speed - Cities and FUAs — Uploading speed 22.9 Percentage of national value 2025 down 29.3% 252nd Correction coefficients in the European Union (Duty stations) - index 95 2025 up 21.8% 15th Purchasing Power Parities in the European Union (Duty stations) 0.95 2025 up 21.8% 19th Nitrogen dioxide concentrations in European capital cities - monthly 6.9 2026 down 51.7% 29th