Environment in Napa 13 indicators covering environment for Napa. IndicatorLatest Year10-yr change Rank Drought - Cities and FUAs — Land soil moisture anomaly -1.1 Percentage change 2025 up 93.6% 485th Greenhouse gas emissions - Cities and FUAs — GHG emissions from waste 0.02 Tonnes of CO2-equivalent 2024 unchanged 703rd Total and environment-related patents - FUAs — Patent applications 7.4 Patents 2022 down 23.7% 496th Land surface temperature - Cities and FUAs — Daytime summer land 37.54 Degrees celsius 2024 up 3.3% 180th Land surface temperature - Cities and FUAs — Daytime winter land 13.76 Degrees celsius 2024 down 14.2% 359th Land surface temperature - Cities and FUAs — Daytime yearly land 28.61 Degrees celsius 2024 up 2.6% 232nd Land surface temperature - Cities and FUAs — Nighttime summer land 15.89 Degrees celsius 2024 up 6.0% 713th Land surface temperature - Cities and FUAs — Nighttime winter land 4.54 Degrees celsius 2024 down 3.9% 355th Land surface temperature - Cities and FUAs — Nighttime yearly land 9.48 Degrees celsius 2024 up 2.9% 537th Air pollution - Cities and FUAs — Population exposure to nitrogen 9.2 Microgrammes per cubic metre 2025 — 1090th Air pollution - Cities and FUAs — Population exposure to ozone 47.21 Microgrammes per cubic metre 2025 — 1253rd Air pollution - Cities and FUAs — Population exposure to PM10 19.64 Microgrammes per cubic metre 2025 — 1228th Air pollution - Cities and FUAs — Population exposure to PM2.5 7.67 Microgrammes per cubic metre 2025 — 1248th