Invest Where It Matters: Using Observed Global Heat Stress Trends to Guide Resilience Decisions
Degree Day has mapped the climatology of each ISO 7243 category. ISO 7243 is the international standard for assessing occupational heat stress. It defines five risk categories based on the Wet-Bulb Globe Temperature (WBGT) — a composite index that integrates air temperature, humidity, wind, and solar radiation to represent the body’s true thermal load.
