Planning Beyond 1.5°C at the Local Level

How cities are engaging with higher-warming futures through broad screening and focused case insights
Back English Policy brief / Technical paper Published: 31.03.2026
Authors

Debra Roberts, Coordinating Lead Author, IPCC SR-Cities Chap, Honorary professor at the University of KwaZu

Contributors

Daniel Firth
Davide Cassanmagnago
Astolfo Juan Pablo
Cathy Oke
Andy Deacon and Maryke van Staden

This joint policy brief by GCoM and ICLEI examines whether and how cities are planning not only to limit warming to 1.5°C, but also for the increasingly plausible conditions above that threshold. It combines a broad screening of 1,444 Climate Action Plans and related municipal documents across 495 cities with a focused review of 20 cases across Asia and the Pacific, Africa, Europe, and North America. Together, these two lenses show that many cities are moving beyond rhetorical references to 1.5°C toward operational use of higher-warming assumptions in risk assessment, adaptation planning, and local governance.

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