Reference Data in Blackburn with Darwen 11 indicators covering reference data for Blackburn with Darwen. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 0 Degree days 2025 down 100.0% 1263rd Cooling and heating degree days - Cities and FUAs — Change in cooling -4.05 Degree days 2025 down 241.5% 567th Cooling and heating degree days - Cities and FUAs 2,054 Degree days 2025 down 14.4% 359th Cooling and heating degree days - Cities and FUAs — Change in heating -423.35 Degree days 2025 down 449.6% 903rd Precipitation - Cities and FUAs — Extreme precipitation days 5.3 Days per year 2024 up 51.4% 719th Precipitation - Cities and FUAs — Change in extreme precipitation 1.09 Days per year 2024 up 253.4% 642nd Dependency ratio - Cities and FUAs 24.2 Percentage of population aged 15-64 years 2024 up 1.7% 868th 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 0 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Downloading speed 16.8 Percentage of national value 2025 up 63.1% 276th Internet speed - Cities and FUAs — Uploading speed 59.6 Percentage of national value 2025 up 714.4% 36th