Environment in Portsmouth 12 indicators covering environment for Portsmouth. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -4.7 Percentage change 2025 — 839th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.03 Tonnes of CO2-equivalent 2024 down 40.0% 590th Land surface temperature - Cities and FUAs — Daytime summer land 27.31 Degrees celsius 2024 down 14.3% 1014th Land surface temperature - Cities and FUAs — Daytime winter land 5.7 Degrees celsius 2024 down 9.3% 817th Land surface temperature - Cities and FUAs — Daytime yearly land 18.66 Degrees celsius 2024 down 7.1% 1028th Land surface temperature - Cities and FUAs — Nighttime summer land 13.09 Degrees celsius 2024 down 12.9% 1148th Land surface temperature - Cities and FUAs — Nighttime winter land 2.15 Degrees celsius 2024 up 172.0% 496th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.49 Degrees celsius 2024 down 6.2% 801st Air pollution - Cities and FUAs — Population exposure to nitrogen 46.23 Microgrammes per cubic metre 2025 — 214th Air pollution - Cities and FUAs — Population exposure to ozone 86.14 Microgrammes per cubic metre 2025 — 597th Air pollution - Cities and FUAs — Population exposure to PM10 36.87 Microgrammes per cubic metre 2025 — 714th Air pollution - Cities and FUAs — Population exposure to PM2.5 25.03 Microgrammes per cubic metre 2025 — 766th