Environment in Greater Sydney 13 indicators covering environment for Greater Sydney. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly 6.6 Percentage change 2025 down 8.3% 56th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 2.69 Tonnes of CO2-equivalent 2024 up 3.9% 13th Total and environment-related patents - FUAs — Patent applications 460.5 Patents 2022 down 1.1% 33rd Land surface temperature - Cities and FUAs — Daytime summer land 34.65 Degrees celsius 2024 down 7.6% 320th Land surface temperature - Cities and FUAs — Daytime winter land 16.66 Degrees celsius 2024 down 7.9% 265th Land surface temperature - Cities and FUAs — Daytime yearly land 24.97 Degrees celsius 2024 down 7.9% 414th Land surface temperature - Cities and FUAs — Nighttime summer land 18.43 Degrees celsius 2024 up 1.4% 474th Land surface temperature - Cities and FUAs — Nighttime winter land 7.91 Degrees celsius 2024 up 10.4% 199th Land surface temperature - Cities and FUAs — Nighttime yearly land 13.23 Degrees celsius 2024 up 6.6% 235th Air pollution - Cities and FUAs — Population exposure to nitrogen 10.35 Microgrammes per cubic metre 2025 — 1038th Air pollution - Cities and FUAs — Population exposure to ozone 55.33 Microgrammes per cubic metre 2025 — 1056th Air pollution - Cities and FUAs — Population exposure to PM10 65.78 Microgrammes per cubic metre 2025 — 148th Air pollution - Cities and FUAs — Population exposure to PM2.5 57.89 Microgrammes per cubic metre 2025 — 128th