Reference Data in Lille 12 indicators covering reference data for Lille. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 19.77 Degree days 2025 down 60.0% 983rd Cooling and heating degree days - Cities and FUAs — Change in cooling -17.02 Degree days 2025 down 235.0% 830th Cooling and heating degree days - Cities and FUAs 1,443 Degree days 2025 down 17.8% 711th Cooling and heating degree days - Cities and FUAs — Change in heating -553.96 Degree days 2025 down 129.7% 1129th Precipitation - Cities and FUAs — Extreme precipitation days 2.09 Days per year 2024 up 77.0% 1110th Precipitation - Cities and FUAs — Change in extreme precipitation 0.7455 Days per year 2024 up 554.5% 713th Dependency ratio - Cities and FUAs 22.5 Percentage of population aged 15-64 years 2022 up 18.4% 944th Wind threats - Cities and FUAs — Exposure to wind threats 100 Percentage of area 2023 up 133.3% 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 366,959 Persons 2022 up 7.5% 50th Internet speed - Cities and FUAs — Downloading speed 12.9 Percentage of national value 2025 down 75.7% 395th Internet speed - Cities and FUAs — Uploading speed 9.9 Percentage of national value 2025 down 74.5% 493rd