Environment in Wien 13 indicators covering environment for Wien. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -3.6 Percentage change 2025 up 34.5% 731st Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.11 Tonnes of CO2-equivalent 2024 down 31.2% 300th Total and environment-related patents - FUAs — Patent applications 323.9 Patents 2022 down 5.8% 45th Land surface temperature - Cities and FUAs — Daytime summer land 31.88 Degrees celsius 2024 down 0.7% 500th Land surface temperature - Cities and FUAs — Daytime winter land 5.1 Degrees celsius 2024 up 19.8% 872nd Land surface temperature - Cities and FUAs — Daytime yearly land 20.33 Degrees celsius 2024 down 14.1% 800th Land surface temperature - Cities and FUAs — Nighttime summer land 18.6 Degrees celsius 2024 up 1.0% 454th Land surface temperature - Cities and FUAs — Nighttime winter land -0.3444 Degrees celsius 2024 up 88.5% 775th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.83 Degrees celsius 2024 down 6.2% 718th Air pollution - Cities and FUAs — Population exposure to nitrogen 39.23 Microgrammes per cubic metre 2025 — 471st Air pollution - Cities and FUAs — Population exposure to ozone 87.24 Microgrammes per cubic metre 2025 — 562nd Air pollution - Cities and FUAs — Population exposure to PM10 32.48 Microgrammes per cubic metre 2025 — 898th Air pollution - Cities and FUAs — Population exposure to PM2.5 27.47 Microgrammes per cubic metre 2025 — 654th