Reference Data in Arras 12 indicators covering reference data for Arras. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 19.31 Degree days 2025 down 61.8% 988th Cooling and heating degree days - Cities and FUAs — Change in cooling -14.59 Degree days 2025 down 188.0% 782nd Cooling and heating degree days - Cities and FUAs 1,660 Degree days 2025 down 9.4% 591st Cooling and heating degree days - Cities and FUAs — Change in heating -408.94 Degree days 2025 down 72.9% 865th Precipitation - Cities and FUAs — Extreme precipitation days 2 Days per year 2024 up 50.0% 1114th Precipitation - Cities and FUAs — Change in extreme precipitation 0.3777 Days per year 2024 up 230.6% 779th Dependency ratio - Cities and FUAs 29.9 Percentage of population aged 15-64 years 2022 up 26.7% 577th Wind threats - Cities and FUAs — Exposure to wind threats 100 Percentage of area 2023 — 1st Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Main mode of transport to work - Cities and FUAs — Employed persons 27,089 Persons 2022 up 5.6% 271st Internet speed - Cities and FUAs — Downloading speed 12.9 Percentage of national value 2025 down 75.6% 395th Internet speed - Cities and FUAs — Uploading speed 13.4 Percentage of national value 2025 down 83.2% 415th