Environment in Liège 13 indicators covering environment for Liège. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -1.6 Percentage change 2025 — 535th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.07 Tonnes of CO2-equivalent 2024 down 22.2% 407th Total and environment-related patents - FUAs — Patent applications 74.9 Patents 2022 up 70.2% 165th Land surface temperature - Cities and FUAs — Daytime summer land 28.75 Degrees celsius 2024 down 14.0% 842nd Land surface temperature - Cities and FUAs — Daytime winter land 3.18 Degrees celsius 2024 down 22.5% 1109th Land surface temperature - Cities and FUAs — Daytime yearly land 18.92 Degrees celsius 2024 down 9.4% 997th Land surface temperature - Cities and FUAs — Nighttime summer land 14.6 Degrees celsius 2024 down 2.5% 924th Land surface temperature - Cities and FUAs — Nighttime winter land -0.8191 Degrees celsius 2024 up 69.5% 831st Land surface temperature - Cities and FUAs — Nighttime yearly land 7.46 Degrees celsius 2024 down 1.1% 807th Air pollution - Cities and FUAs — Population exposure to nitrogen 36.49 Microgrammes per cubic metre 2025 — 561st Air pollution - Cities and FUAs — Population exposure to ozone 81.99 Microgrammes per cubic metre 2025 — 683rd Air pollution - Cities and FUAs — Population exposure to PM10 27.87 Microgrammes per cubic metre 2025 — 1023rd Air pollution - Cities and FUAs — Population exposure to PM2.5 21.79 Microgrammes per cubic metre 2025 — 905th