Environment in Philadelphia (Greater) 13 indicators covering environment for Philadelphia (Greater). IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly 6.1 Percentage change 2025 up 365.2% 66th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.65 Tonnes of CO2-equivalent 2024 down 3.0% 66th Total and environment-related patents - FUAs — Patent applications 1,403 Patents 2022 down 1.2% 11th Land surface temperature - Cities and FUAs — Daytime summer land 31.81 Degrees celsius 2024 down 1.0% 514th Land surface temperature - Cities and FUAs — Daytime winter land 7.62 Degrees celsius 2024 up 48.9% 703rd Land surface temperature - Cities and FUAs — Daytime yearly land 21.9 Degrees celsius 2024 up 5.6% 645th Land surface temperature - Cities and FUAs — Nighttime summer land 18.95 Degrees celsius 2024 down 2.0% 419th Land surface temperature - Cities and FUAs — Nighttime winter land -1.89 Degrees celsius 2024 up 63.5% 968th Land surface temperature - Cities and FUAs — Nighttime yearly land 7.52 Degrees celsius 2024 up 23.3% 789th Air pollution - Cities and FUAs — Population exposure to nitrogen 24.7 Microgrammes per cubic metre 2025 — 762nd Air pollution - Cities and FUAs — Population exposure to ozone 50.72 Microgrammes per cubic metre 2025 — 1188th Air pollution - Cities and FUAs — Population exposure to PM10 22.28 Microgrammes per cubic metre 2025 — 1168th Air pollution - Cities and FUAs — Population exposure to PM2.5 8.67 Microgrammes per cubic metre 2025 — 1173rd