Environment in Solingen 13 indicators covering environment for Solingen. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -4.4 Percentage change 2025 down 204.8% 813th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.01 Tonnes of CO2-equivalent 2024 unchanged 872nd Total and environment-related patents - FUAs — Patent applications 23.5 Patents 2022 down 16.4% 335th Land surface temperature - Cities and FUAs — Daytime summer land 27.33 Degrees celsius 2024 down 12.7% 1012th Land surface temperature - Cities and FUAs — Daytime winter land 1.83 Degrees celsius 2024 down 38.1% 1227th Land surface temperature - Cities and FUAs — Daytime yearly land 19.1 Degrees celsius 2024 down 7.7% 972nd Land surface temperature - Cities and FUAs — Nighttime summer land 14.19 Degrees celsius 2024 down 10.0% 988th Land surface temperature - Cities and FUAs — Nighttime winter land -2.13 Degrees celsius 2024 up 37.6% 996th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.39 Degrees celsius 2024 down 12.1% 825th Air pollution - Cities and FUAs — Population exposure to nitrogen 53.24 Microgrammes per cubic metre 2025 — 78th Air pollution - Cities and FUAs — Population exposure to ozone 74.35 Microgrammes per cubic metre 2025 — 793rd Air pollution - Cities and FUAs — Population exposure to PM10 41.03 Microgrammes per cubic metre 2025 — 504th Air pollution - Cities and FUAs — Population exposure to PM2.5 31.42 Microgrammes per cubic metre 2025 — 473rd