Climate Change in New Haven 12 indicators covering climate change for New Haven. IndicatorLatest Year10-yr change Rank Air temperature, hot days, tropical nights and icing days - Cities 12.93 Degrees celsius 2025 up 22.7% 568th Air temperature, hot days, tropical nights and icing days - Cities 2.52 Degrees celsius 2025 up 1,889.9% 304th Climate projections by scenario, 2030–2060 – Cities and FUAs 13.78 Degrees celsius 2060 down 0.0% 644th Climate projections by scenario, 2030–2060 – Cities and FUAs 2.31 Degrees celsius 2060 down 0.0% 159th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.01 Tonnes of CO2-equivalent 2024 unchanged 695th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.38 Tonnes of CO2-equivalent 2024 down 10.4% 88th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.85 Tonnes of CO2-equivalent 2024 up 4.9% 259th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.8 Tonnes of CO2-equivalent 2024 up 5.3% 255th Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 3.32 Tonnes of CO2-equivalent 2024 up 147.8% 56th Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 1.66 Tonnes of CO2-equivalent 2024 down 1.2% 82nd Greenhouse gas emissions - Cities and FUAs — GHG emissions total 7.44 Tonnes of CO2-equivalent 2024 up 33.3% 106th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.73 Tonnes of CO2-equivalent 2024 unchanged 83rd