Reference Data in Duisburg 11 indicators covering reference data for Duisburg. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 38.71 Degree days 2025 down 43.1% 821st Cooling and heating degree days - Cities and FUAs — Change in cooling -9.77 Degree days 2025 down 150.1% 693rd Cooling and heating degree days - Cities and FUAs 1,697 Degree days 2025 down 9.2% 565th Cooling and heating degree days - Cities and FUAs — Change in heating -438.86 Degree days 2025 down 64.8% 946th Precipitation - Cities and FUAs — Extreme precipitation days 4.22 Days per year 2024 down 11.7% 822nd Precipitation - Cities and FUAs — Change in extreme precipitation 1.96 Days per year 2024 down 22.1% 478th Dependency ratio - Cities and FUAs 31.7 Percentage of population aged 15-64 years 2025 down 0.9% 477th 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 -2.1 Percentage of national value 2025 down 129.6% 959th Internet speed - Cities and FUAs — Uploading speed -33 Percentage of national value 2025 down 72.8% 1196th