Climate Change in Ottawa 12 indicators covering climate change for Ottawa. IndicatorLatest Year10-yr change Rank Air temperature, hot days, tropical nights and icing days - Cities 8.09 Degrees celsius 2025 up 26.1% 1134th Air temperature, hot days, tropical nights and icing days - Cities 1.67 Degrees celsius 2025 up 28,621.9% 442nd Climate projections by scenario, 2030–2060 – Cities and FUAs 8.79 Degrees celsius 2060 up 0.6% 1313th Climate projections by scenario, 2030–2060 – Cities and FUAs 2.24 Degrees celsius 2060 up 2.5% 201st Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.09 Tonnes of CO2-equivalent 2024 up 12.5% 195th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 2.61 Tonnes of CO2-equivalent 2024 down 7.4% 44th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 4.9 Tonnes of CO2-equivalent 2024 up 24.7% 47th Greenhouse gas emissions - Cities and FUAs — GHG emissions from 4.71 Tonnes of CO2-equivalent 2024 up 23.3% 47th Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.22 Tonnes of CO2-equivalent 2024 up 15.8% 388th Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 2.06 Tonnes of CO2-equivalent 2024 down 4.2% 61st Greenhouse gas emissions - Cities and FUAs — GHG emissions total 10.39 Tonnes of CO2-equivalent 2024 up 7.8% 71st Greenhouse gas emissions - Cities and FUAs — GHG emissions from 2.25 Tonnes of CO2-equivalent 2024 down 3.0% 58th