Climate Change in San Diego 12 indicators covering climate change for San Diego. IndicatorLatest Year10-yr change Rank Air temperature, hot days, tropical nights and icing days - Cities 22.9 Degrees celsius 2025 up 26.4% 134th Air temperature, hot days, tropical nights and icing days - Cities 5.86 Degrees celsius 2025 up 446.6% 72nd Climate projections by scenario, 2030–2060 – Cities and FUAs 19.38 Degrees celsius 2060 up 1.5% 232nd Climate projections by scenario, 2030–2060 – Cities and FUAs 2.3 Degrees celsius 2060 up 13.7% 166th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.04 Tonnes of CO2-equivalent 2024 down 20.0% 388th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 4.54 Tonnes of CO2-equivalent 2024 up 1.3% 27th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 4.3 Tonnes of CO2-equivalent 2024 up 5.4% 53rd Greenhouse gas emissions - Cities and FUAs — GHG emissions from 4.2 Tonnes of CO2-equivalent 2024 up 5.3% 52nd Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 3.55 Tonnes of CO2-equivalent 2024 up 105.2% 51st Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 5.74 Tonnes of CO2-equivalent 2024 down 1.7% 18th Greenhouse gas emissions - Cities and FUAs — GHG emissions total 20.49 Tonnes of CO2-equivalent 2024 up 10.7% 35th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 5.95 Tonnes of CO2-equivalent 2024 down 0.5% 15th