Reference Data in Olsztyn 11 indicators covering reference data for Olsztyn. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 1.51 Degree days 2025 down 98.0% 1204th Cooling and heating degree days - Cities and FUAs — Change in cooling -31.86 Degree days 2025 down 174.5% 1012th Cooling and heating degree days - Cities and FUAs 2,490 Degree days 2025 down 3.2% 176th Cooling and heating degree days - Cities and FUAs — Change in heating -530.77 Degree days 2025 down 18.7% 1103rd Precipitation - Cities and FUAs — Extreme precipitation days 0.9991 Days per year 2024 down 0.1% 1246th Precipitation - Cities and FUAs — Change in extreme precipitation -0.6542 Days per year 2024 down 0.1% 1000th Dependency ratio - Cities and FUAs 34.5 Percentage of population aged 15-64 years 2024 up 60.5% 344th 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 24.5 Percentage of national value 2025 up 56.1% 129th Internet speed - Cities and FUAs — Uploading speed 6.2 Percentage of national value 2025 up 6,100.0% 593rd