Environment in Porto 13 indicators covering environment for Porto. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -0.5 Percentage change 2025 up 95.0% 4th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.1 Tonnes of CO2-equivalent 2024 down 16.7% 3rd Total and environment-related patents - FUAs — Patent applications 45.8 Patents 2022 up 58.5% 3rd Land surface temperature - Cities and FUAs — Daytime summer land 31.29 Degrees celsius 2024 down 1.8% 6th Land surface temperature - Cities and FUAs — Daytime winter land 13.27 Degrees celsius 2024 down 1.1% 1st Land surface temperature - Cities and FUAs — Daytime yearly land 23.61 Degrees celsius 2024 down 4.9% 6th Land surface temperature - Cities and FUAs — Nighttime summer land 15.9 Degrees celsius 2024 up 1.9% 4th Land surface temperature - Cities and FUAs — Nighttime winter land 5.99 Degrees celsius 2024 up 33.1% 2nd Land surface temperature - Cities and FUAs — Nighttime yearly land 11.41 Degrees celsius 2024 up 11.8% 2nd Air pollution - Cities and FUAs — Population exposure to nitrogen 46.3 Microgrammes per cubic metre 2025 — 2nd Air pollution - Cities and FUAs — Population exposure to ozone 84.6 Microgrammes per cubic metre 2025 — 6th Air pollution - Cities and FUAs — Population exposure to PM10 44.72 Microgrammes per cubic metre 2025 — 5th Air pollution - Cities and FUAs — Population exposure to PM2.5 32.08 Microgrammes per cubic metre 2025 — 5th