Reference Data in Chartres 12 indicators covering reference data for Chartres. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 52.01 Degree days 2025 down 43.1% 762nd Cooling and heating degree days - Cities and FUAs — Change in cooling -3.8 Degree days 2025 down 110.7% 555th Cooling and heating degree days - Cities and FUAs 1,604 Degree days 2025 down 7.4% 622nd Cooling and heating degree days - Cities and FUAs — Change in heating -385.15 Degree days 2025 down 50.3% 783rd Precipitation - Cities and FUAs — Extreme precipitation days 3.75 Days per year 2024 down 34.8% 892nd Precipitation - Cities and FUAs — Change in extreme precipitation 2.29 Days per year 2024 down 46.6% 418th Dependency ratio - Cities and FUAs 36.1 Percentage of population aged 15-64 years 2022 up 31.3% 293rd 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 Main mode of transport to work - Cities and FUAs — Employed persons 30,029 Persons 2022 up 2.7% 267th Internet speed - Cities and FUAs — Downloading speed 19 Percentage of national value 2025 up 27.5% 211th Internet speed - Cities and FUAs — Uploading speed 17.5 Percentage of national value 2025 down 40.7% 354th