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% 430th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.1 Tonnes of CO2-equivalent 2024 down 16.7% 329th Total and environment-related patents - FUAs — Patent applications 45.8 Patents 2022 up 58.5% 218th Land surface temperature - Cities and FUAs — Daytime summer land 31.29 Degrees celsius 2024 down 1.8% 561st Land surface temperature - Cities and FUAs — Daytime winter land 13.27 Degrees celsius 2024 down 1.1% 384th Land surface temperature - Cities and FUAs — Daytime yearly land 23.61 Degrees celsius 2024 down 4.9% 506th Land surface temperature - Cities and FUAs — Nighttime summer land 15.9 Degrees celsius 2024 up 1.9% 711th Land surface temperature - Cities and FUAs — Nighttime winter land 5.99 Degrees celsius 2024 up 33.1% 273rd Land surface temperature - Cities and FUAs — Nighttime yearly land 11.41 Degrees celsius 2024 up 11.8% 355th Air pollution - Cities and FUAs — Population exposure to nitrogen 46.3 Microgrammes per cubic metre 2025 — 209th Air pollution - Cities and FUAs — Population exposure to ozone 84.6 Microgrammes per cubic metre 2025 — 635th Air pollution - Cities and FUAs — Population exposure to PM10 44.72 Microgrammes per cubic metre 2025 — 390th Air pollution - Cities and FUAs — Population exposure to PM2.5 32.08 Microgrammes per cubic metre 2025 — 446th