UNEP estimated global greenhouse gas emissions at 58.4 ± 5.5 gigatonnes of CO₂ equivalent in 2025; uncertainty prevents a conclusion that total emissions fell or peaked.
Source: Emissions Gap Report 2026: The point of return - Urgent emissions cuts needed to come back from overshoot of 1.5°C (2026), p. xiv to xv. Read our report summary.