> For the complete documentation index, see [llms.txt](https://docs.answr.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.answr.space/api-data-layers/natural-disasters/extreme-heat-probability.md).

# Extreme Heat Probability

The extreme heat probability refers to the hazard of [environmental](/api-data-layers/climate-analytics/universal-thermal-climate-index.md) conditions can cause to the human body. This layer refers to the probability of exceeding specific UTCI (University Thermal Climate Index) values.

<table><thead><tr><th width="182.33333333333331" align="center">Name</th><th align="center">Threshold</th><th align="center">Description</th></tr></thead><tbody><tr><td align="center">Extreme</td><td align="center">>46 Celsius</td><td align="center">Extreme heat stress</td></tr><tr><td align="center">High</td><td align="center">>38 and &#x3C;46 Celsius</td><td align="center">Very strong heat stress</td></tr><tr><td align="center">Moderate</td><td align="center">>32 and &#x3C;38 Celsius</td><td align="center">Strong heat stress</td></tr><tr><td align="center">Low</td><td align="center">>26 and &#x3C;32 Celsius</td><td align="center">Moderate heat stress</td></tr></tbody></table>