Environment in Piedras Negras 13 indicators covering environment for Piedras Negras. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -11.7 Percentage change 2025 down 201.7% 1231st 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 0.2 Patents 2020 down 80.0% 848th Land surface temperature - Cities and FUAs — Daytime summer land 43.33 Degrees celsius 2024 down 5.1% 37th Land surface temperature - Cities and FUAs — Daytime winter land 22.88 Degrees celsius 2024 up 4.8% 153rd Land surface temperature - Cities and FUAs — Daytime yearly land 35.57 Degrees celsius 2024 up 1.2% 35th Land surface temperature - Cities and FUAs — Nighttime summer land 24.86 Degrees celsius 2024 down 0.5% 20th Land surface temperature - Cities and FUAs — Nighttime winter land 7.53 Degrees celsius 2024 up 21.2% 209th Land surface temperature - Cities and FUAs — Nighttime yearly land 16.87 Degrees celsius 2024 up 13.8% 111th Air pollution - Cities and FUAs — Population exposure to nitrogen 6.67 Microgrammes per cubic metre 2025 — 1176th Air pollution - Cities and FUAs — Population exposure to ozone 59.88 Microgrammes per cubic metre 2025 — 995th Air pollution - Cities and FUAs — Population exposure to PM10 27.14 Microgrammes per cubic metre 2025 — 1042nd Air pollution - Cities and FUAs — Population exposure to PM2.5 9.47 Microgrammes per cubic metre 2025 — 1124th