Reference Data in Bonn 13 indicators covering reference data for Bonn. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 37.02 Degree days 2025 down 50.6% 830th Cooling and heating degree days - Cities and FUAs — Change in cooling -7.61 Degree days 2025 down 125.0% 645th Cooling and heating degree days - Cities and FUAs 1,837 Degree days 2025 down 9.1% 473rd Cooling and heating degree days - Cities and FUAs — Change in heating -452.79 Degree days 2025 down 67.8% 984th Precipitation - Cities and FUAs — Extreme precipitation days 5.22 Days per year 2024 up 67.8% 726th Precipitation - Cities and FUAs — Change in extreme precipitation 2.98 Days per year 2024 up 242.4% 325th Dependency ratio - Cities and FUAs 28.4 Percentage of population aged 15-64 years 2025 up 5.2% 667th 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 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Downloading speed -0.7 Percentage of national value 2025 down 105.0% 914th Internet speed - Cities and FUAs — Uploading speed -32 Percentage of national value 2025 down 841.2% 1188th Correction coefficients in the European Union (Duty stations) - index 95.8 2020 up 1.2% 14th Purchasing Power Parities in the European Union (Duty stations) 0.958 2020 up 1.2% 18th