The Copernicus Interactive Climate Atlas (C3S Atlas) is a web application of the Copernicus Climate Change Service (C3S) allowing for flexible exploration and analysis of past and future climate monitoring and change information from multiple lines of evidence provided by the observational, reanalysis and climate change projection datasets available in the C3S Climate Data Store (CDS). The Atlas facilitates global and regional in-depth assessment of past trends and future changes in key variables and (extreme) indices for different periods across emission scenarios or for different policy-relevant global warming levels (e.g. 1.5°, 2°, 3° and 4°).