Quarterly Release with Data through May 2021

The Actuaries Climate Index (ACI) has been updated with data through the spring of 2021. The ACI provides objective measures of specific and aggregate changes in climate extremes and sea level across Canada and the U.S. and is based on an analysis of seasonal data from neutral, scientific sources for six index components collected since 1961.

With this update, the maps and graphs on the website have been updated, as well as the ACI data that is available for download. The Data Disclosure webpage summarizes important information about the data.