Reference Data in Alkmaar 11 indicators covering reference data for Alkmaar. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 4.6 Degree days 2025 down 65.0% 1151st Cooling and heating degree days - Cities and FUAs — Change in cooling -6.44 Degree days 2025 down 403.2% 626th Cooling and heating degree days - Cities and FUAs 1,599 Degree days 2025 down 6.7% 628th Cooling and heating degree days - Cities and FUAs — Change in heating -357.65 Degree days 2025 down 47.6% 730th Precipitation - Cities and FUAs — Extreme precipitation days 3.57 Days per year 2024 up 177.9% 915th Precipitation - Cities and FUAs — Change in extreme precipitation 1.93 Days per year 2024 up 646.7% 483rd Dependency ratio - Cities and FUAs 32.8 Percentage of population aged 15-64 years 2025 up 26.2% 433rd Wind threats - Cities and FUAs — Exposure to wind threats 100 Percentage of area 2023 unchanged 1st Coastal flooding - Cities and FUAs — Built-up area exposure to 92.72 Percentage of built-up area 2022 up 0.1% 11th Internet speed - Cities and FUAs — Downloading speed 7.1 Percentage of national value 2025 down 10.1% 592nd Internet speed - Cities and FUAs — Uploading speed -5.6 Percentage of national value 2025 up 81.4% 836th