Environment in Troyes 13 indicators covering environment for Troyes. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -1.4 Percentage change 2025 down 27.3% 512th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.01 Tonnes of CO2-equivalent 2024 unchanged 872nd Total and environment-related patents - FUAs — Patent applications 4.7 Patents 2022 down 35.6% 558th Land surface temperature - Cities and FUAs — Daytime summer land 31.47 Degrees celsius 2024 down 12.6% 543rd Land surface temperature - Cities and FUAs — Daytime winter land 4.11 Degrees celsius 2024 down 26.1% 991st Land surface temperature - Cities and FUAs — Daytime yearly land 21.8 Degrees celsius 2024 down 13.4% 651st Land surface temperature - Cities and FUAs — Nighttime summer land 15.49 Degrees celsius 2024 down 3.6% 777th Land surface temperature - Cities and FUAs — Nighttime winter land 0.9293 Degrees celsius 2024 up 226.8% 640th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.85 Degrees celsius 2024 down 11.4% 722nd Air pollution - Cities and FUAs — Population exposure to nitrogen 31.93 Microgrammes per cubic metre 2025 — 669th Air pollution - Cities and FUAs — Population exposure to ozone 106.12 Microgrammes per cubic metre 2025 — 239th Air pollution - Cities and FUAs — Population exposure to PM10 32.83 Microgrammes per cubic metre 2025 — 894th Air pollution - Cities and FUAs — Population exposure to PM2.5 23.1 Microgrammes per cubic metre 2025 — 861st