Environment in Bonn 13 indicators covering environment for Bonn. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -2.7 Percentage change 2025 down 187.1% 650th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.01 Tonnes of CO2-equivalent 2024 down 50.0% 872nd Total and environment-related patents - FUAs — Patent applications 81 Patents 2022 down 32.8% 157th Land surface temperature - Cities and FUAs — Daytime summer land 27.52 Degrees celsius 2024 down 13.5% 995th Land surface temperature - Cities and FUAs — Daytime winter land 4.29 Degrees celsius 2024 up 12.0% 962nd Land surface temperature - Cities and FUAs — Daytime yearly land 18.11 Degrees celsius 2024 down 11.9% 1100th Land surface temperature - Cities and FUAs — Nighttime summer land 14.53 Degrees celsius 2024 down 8.0% 933rd Land surface temperature - Cities and FUAs — Nighttime winter land -1.47 Degrees celsius 2024 up 49.7% 920th Land surface temperature - Cities and FUAs — Nighttime yearly land 6.52 Degrees celsius 2024 down 19.0% 1040th Air pollution - Cities and FUAs — Population exposure to nitrogen 50.01 Microgrammes per cubic metre 2025 — 128th Air pollution - Cities and FUAs — Population exposure to ozone 81.74 Microgrammes per cubic metre 2025 — 687th Air pollution - Cities and FUAs — Population exposure to PM10 34.77 Microgrammes per cubic metre 2025 — 821st Air pollution - Cities and FUAs — Population exposure to PM2.5 25.8 Microgrammes per cubic metre 2025 — 735th