Environment in Viseu 13 indicators covering environment for Viseu. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -2.3 Percentage change 2025 up 78.3% 608th 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 1 Patents 2022 down 28.6% 735th Land surface temperature - Cities and FUAs — Daytime summer land 31.83 Degrees celsius 2024 down 0.3% 511th Land surface temperature - Cities and FUAs — Daytime winter land 11.78 Degrees celsius 2024 down 1.6% 484th Land surface temperature - Cities and FUAs — Daytime yearly land 23.61 Degrees celsius 2024 down 3.3% 507th Land surface temperature - Cities and FUAs — Nighttime summer land 14.08 Degrees celsius 2024 up 5.3% 1007th Land surface temperature - Cities and FUAs — Nighttime winter land 3.13 Degrees celsius 2024 up 45.7% 438th Land surface temperature - Cities and FUAs — Nighttime yearly land 8.81 Degrees celsius 2024 up 8.9% 590th Air pollution - Cities and FUAs — Population exposure to nitrogen 32.52 Microgrammes per cubic metre 2025 — 660th Air pollution - Cities and FUAs — Population exposure to ozone 149.41 Microgrammes per cubic metre 2025 — 35th Air pollution - Cities and FUAs — Population exposure to PM10 42.32 Microgrammes per cubic metre 2025 — 463rd Air pollution - Cities and FUAs — Population exposure to PM2.5 29.43 Microgrammes per cubic metre 2025 — 558th