Environment in Lahti/Lahtis 13 indicators covering environment for Lahti/Lahtis. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly 5.8 Percentage change 2025 up 70.6% 73rd Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.12 Tonnes of CO2-equivalent 2024 up 71.4% 288th Total and environment-related patents - FUAs — Patent applications 16 Patents 2022 up 8.1% 390th Land surface temperature - Cities and FUAs — Daytime summer land 22.08 Degrees celsius 2024 down 7.4% 1332nd Land surface temperature - Cities and FUAs — Daytime winter land -13.65 Degrees celsius 2024 down 28.1% 1383rd Land surface temperature - Cities and FUAs — Daytime yearly land 10.8 Degrees celsius 2024 down 9.5% 1372nd Land surface temperature - Cities and FUAs — Nighttime summer land 13.21 Degrees celsius 2024 up 3.3% 1135th Land surface temperature - Cities and FUAs — Nighttime winter land -11.53 Degrees celsius 2024 down 0.4% 1370th Land surface temperature - Cities and FUAs — Nighttime yearly land 2.87 Degrees celsius 2024 up 58.4% 1329th Air pollution - Cities and FUAs — Population exposure to nitrogen 18.4 Microgrammes per cubic metre 2025 — 830th Air pollution - Cities and FUAs — Population exposure to ozone 104.12 Microgrammes per cubic metre 2025 — 257th Air pollution - Cities and FUAs — Population exposure to PM10 16.25 Microgrammes per cubic metre 2025 — 1292nd Air pollution - Cities and FUAs — Population exposure to PM2.5 11.61 Microgrammes per cubic metre 2025 — 1035th