The Actuaries Climate Index (ACI) is intended to be a resource for actuaries and others in developing predictive models for potential climate change related losses or opportunities and for risk management strategies

The ACI has been developed by a consortium of North American actuarial bodies - American Academy of Actuaries, the Casualty Actuarial Society, the Canadian Institute of Actuaries and the Society of Actuaries. It is intended to serve as a tool to provide information about climate-related extreme events to the insurance industry and the general public. It is based on six key elements:

  • High temperatures
  • Low temperatures
  • High precipitation
  • Drought
  • Strong winds
  • Sea level

Measures of these elements are combined into an index that looks at changes compared to the period from 1961 – 1990. Currently, the ACI covers only North America.

UK/Europe Feasibility Study

The IFoA commissioned a feasibility study to explore whether would be possible to extend the ACI to cover the UK and Europe. The study concluded that an extension would be technically feasible, and that no changes to the formulation of the index would be required; the main challenge would be that of selecting the optimal datasets.


Research commissioned by: The IFoA
Project conduted by:

Charles Curry

Oversight group:

Louise Pryor, Kenneth Donaldson

Status: Ongoing
Commenced: September 2015



Contact Details

If you want more information about our research programmes please contact the IFoA Actuarial Research Centre:

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