The United Nations Environment Programme says the world is heading for about 2.8°C of warming this century under current policies. Even if every country delivers its climate plan in full, warming would reach 2.6°C. Temperatures will pass the 1.5°C limit set in Paris, but the report says fast, deep emissions cuts could keep peak warming near 1.7°C to 1.8°C & bring it back below 1.5°C by 2100. That means cutting emissions 18% by 2030 & 69% by 2040, sharply reducing coal, oil & gas, & tripling renewable energy