Reference Data in Zurich 17 indicators covering reference data for Zurich. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Change in cooling -6.24 Degree days 2025 down 111.8% 615th Cooling and heating degree days - Cities and FUAs — Cooling degree -50.01 % change on previous year 2025 down 124.6% 800th Cooling and heating degree days - Cities and FUAs — Change in cooling -121.19 % change on previous year 2025 down 120.3% 627th Cooling and heating degree days - Cities and FUAs, annual growth rate -3.5 % change on previous year 2025 down 144.0% 523rd Cooling and heating degree days - Cities and FUAs — Change in heating -24.13 % change on previous year 2025 down 161.1% 614th Cooling and heating degree days - Cities and FUAs — Change in heating -408.23 Degree days 2025 down 55.0% 853rd Cooling and heating degree days - Cities and FUAs 2,185 Degree days 2025 down 6.2% 310th Cooling and heating degree days - Cities and FUAs — Cooling degree 35.69 Degree days 2025 down 62.4% 833rd Precipitation - Cities and FUAs — Change in extreme precipitation 0.7137 Days per year 2024 up 209.8% 716th Precipitation - Cities and FUAs — Extreme precipitation days 10.83 Days per year 2024 up 14.4% 432nd Exposure to extreme precipitation — Annual precipitation change 65.5 Millimetres per year 2023 up 256.9% 243rd Exposure to extreme temperature — Annual temperature change 1.82 Degrees celsius 2023 up 975.6% 127th Dependency ratio - Cities and FUAs 22.4 Percentage of population aged 15-64 years 2023 down 8.2% 942nd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 271st Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Uploading speed 27.6 Percentage of national value 2025 down 50.6% 212th Internet speed - Cities and FUAs — Downloading speed 13 Percentage of national value 2025 down 42.0% 385th