Heatstroke Risk Calculator

Estimate heat stress and heatstroke risk based on temperature, humidity, sun exposure, activity level, hydration, and symptoms.

Higher temperature increases heat strain quickly.
High humidity makes cooling by sweat less effective.
Direct sun can push body heat higher.
Heavy activity raises internal heat production.
Longer exposure means higher total heat strain.
Dehydration reduces heat tolerance.
Current warning signs (check all that apply)
Symptoms can suggest heat stress is already progressing.
How we calculate

The estimate combines temperature, humidity, sunlight, exertion, time exposed, hydration, and warning signs into a practical heat stress score. It is not a medical diagnostic tool.