Environment in Seoul 15 indicators covering environment for Seoul. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -2.4 Percentage change 2025 up 35.1% 615th Historical exposure to drought — Cropland soil moisture anomaly -1.76 Percentage change 2025 up 46.9% 1311th Historical exposure to drought — Land soil moisture anomaly -2.05 Percentage change 2025 up 47.2% 1470th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 3.66 Tonnes of CO2-equivalent 2024 up 11.2% 7th River flooding exposure — Cropland share exposed to river flooding 21.19 Percentage of agricultural land area 2022 down 10.8% 171st Land surface temperature - Cities and FUAs — Daytime summer land 31.29 Degrees celsius 2024 down 5.0% 555th Land surface temperature - Cities and FUAs — Daytime winter land 3.78 Degrees celsius 2024 up 205.1% 1026th Land surface temperature - Cities and FUAs — Daytime yearly land 18.16 Degrees celsius 2024 up 2.0% 1085th Land surface temperature - Cities and FUAs — Nighttime summer land 20.8 Degrees celsius 2024 up 0.1% 254th Land surface temperature - Cities and FUAs — Nighttime winter land -3.94 Degrees celsius 2024 up 49.6% 1127th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.56 Degrees celsius 2024 up 37.1% 774th Air pollution - Cities and FUAs — Population exposure to nitrogen 27.92 Microgrammes per cubic metre 2025 — 726th Air pollution - Cities and FUAs — Population exposure to ozone 66.8 Microgrammes per cubic metre 2025 — 907th Air pollution - Cities and FUAs — Population exposure to PM10 27.98 Microgrammes per cubic metre 2025 — 1010th Air pollution - Cities and FUAs — Population exposure to PM2.5 17.98 Microgrammes per cubic metre 2025 — 966th