Environment in Osan 12 indicators covering environment for Osan. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -3.3 Percentage change 2025 up 13.2% 707th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.04 Tonnes of CO2-equivalent 2024 unchanged 537th Land surface temperature - Cities and FUAs — Daytime summer land 33.12 Degrees celsius 2024 down 5.6% 415th Land surface temperature - Cities and FUAs — Daytime winter land 5.15 Degrees celsius 2024 up 123.9% 870th Land surface temperature - Cities and FUAs — Daytime yearly land 19.63 Degrees celsius 2024 up 2.6% 902nd Land surface temperature - Cities and FUAs — Nighttime summer land 21.2 Degrees celsius 2024 up 2.1% 215th Land surface temperature - Cities and FUAs — Nighttime winter land -3.99 Degrees celsius 2024 up 48.6% 1140th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.61 Degrees celsius 2024 up 60.4% 773rd Air pollution - Cities and FUAs — Population exposure to nitrogen 23.69 Microgrammes per cubic metre 2025 — 774th Air pollution - Cities and FUAs — Population exposure to ozone 59.97 Microgrammes per cubic metre 2025 — 994th Air pollution - Cities and FUAs — Population exposure to PM10 30.54 Microgrammes per cubic metre 2025 — 958th Air pollution - Cities and FUAs — Population exposure to PM2.5 19.04 Microgrammes per cubic metre 2025 — 954th