Environment in Erlangen 13 indicators covering environment for Erlangen. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -3.4 Percentage change 2025 up 48.5% 711th 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 298.6 Patents 2022 down 36.9% 53rd Land surface temperature - Cities and FUAs — Daytime summer land 29.44 Degrees celsius 2024 down 11.6% 765th Land surface temperature - Cities and FUAs — Daytime winter land 2.44 Degrees celsius 2024 down 12.8% 1183rd Land surface temperature - Cities and FUAs — Daytime yearly land 20.13 Degrees celsius 2024 down 12.0% 836th Land surface temperature - Cities and FUAs — Nighttime summer land 15.5 Degrees celsius 2024 down 0.5% 774th Land surface temperature - Cities and FUAs — Nighttime winter land -3.08 Degrees celsius 2024 up 17.9% 1082nd Land surface temperature - Cities and FUAs — Nighttime yearly land 7.75 Degrees celsius 2024 up 12.7% 741st Air pollution - Cities and FUAs — Population exposure to nitrogen 45.37 Microgrammes per cubic metre 2025 — 237th Air pollution - Cities and FUAs — Population exposure to ozone 81.39 Microgrammes per cubic metre 2025 — 696th Air pollution - Cities and FUAs — Population exposure to PM10 40.31 Microgrammes per cubic metre 2025 — 549th Air pollution - Cities and FUAs — Population exposure to PM2.5 33.34 Microgrammes per cubic metre 2025 — 412th