Environment in Viana do Castelo 13 indicators covering environment for Viana do Castelo. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -1.3 Percentage change 2025 up 80.0% 501st Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.06 Tonnes of CO2-equivalent 2024 up 20.0% 447th Total and environment-related patents - FUAs — Patent applications 2.6 Patents 2022 up 2,500.0% 645th Land surface temperature - Cities and FUAs — Daytime summer land 28.11 Degrees celsius 2024 down 4.3% 925th Land surface temperature - Cities and FUAs — Daytime winter land 12.66 Degrees celsius 2024 down 0.0% 425th Land surface temperature - Cities and FUAs — Daytime yearly land 21.64 Degrees celsius 2024 down 8.0% 665th Land surface temperature - Cities and FUAs — Nighttime summer land 15.39 Degrees celsius 2024 down 0.0% 794th Land surface temperature - Cities and FUAs — Nighttime winter land 6.09 Degrees celsius 2024 up 51.5% 267th Land surface temperature - Cities and FUAs — Nighttime yearly land 11 Degrees celsius 2024 up 10.4% 391st Air pollution - Cities and FUAs — Population exposure to nitrogen 30.49 Microgrammes per cubic metre 2025 — 691st Air pollution - Cities and FUAs — Population exposure to ozone 131.66 Microgrammes per cubic metre 2025 — 83rd Air pollution - Cities and FUAs — Population exposure to PM10 37.14 Microgrammes per cubic metre 2025 — 702nd Air pollution - Cities and FUAs — Population exposure to PM2.5 24.75 Microgrammes per cubic metre 2025 — 781st