Environment in Caen 13 indicators covering environment for Caen. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -8.4 Percentage change 2025 down 250.0% 1074th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.02 Tonnes of CO2-equivalent 2024 unchanged 703rd Total and environment-related patents - FUAs — Patent applications 16.5 Patents 2022 down 49.5% 385th Land surface temperature - Cities and FUAs — Daytime summer land 30.21 Degrees celsius 2024 down 8.8% 661st Land surface temperature - Cities and FUAs — Daytime winter land 6.63 Degrees celsius 2024 down 2.8% 753rd Land surface temperature - Cities and FUAs — Daytime yearly land 19.75 Degrees celsius 2024 down 8.4% 891st Land surface temperature - Cities and FUAs — Nighttime summer land 13.16 Degrees celsius 2024 down 9.5% 1137th Land surface temperature - Cities and FUAs — Nighttime winter land 2.08 Degrees celsius 2024 up 147.6% 502nd Land surface temperature - Cities and FUAs — Nighttime yearly land 8.19 Degrees celsius 2024 down 0.6% 666th Air pollution - Cities and FUAs — Population exposure to nitrogen 41.11 Microgrammes per cubic metre 2025 — 404th Air pollution - Cities and FUAs — Population exposure to ozone 87.74 Microgrammes per cubic metre 2025 — 555th Air pollution - Cities and FUAs — Population exposure to PM10 40.1 Microgrammes per cubic metre 2025 — 559th Air pollution - Cities and FUAs — Population exposure to PM2.5 27.29 Microgrammes per cubic metre 2025 — 666th