What are WBGT action thresholds for sport?

ACSM guidelines: below 18C green (low risk); 18-23C yellow (moderate); 23-28C orange (high, limit intensity); 28-32C red (very high, restrict to conditioned athletes); above 32C black (cancel or postpone for general population).

How is WBGT different from air temperature?

WBGT incorporates dry bulb temperature (25%), wet bulb (humidity, 70%), and black globe (radiant heat, 5%). It better reflects the physiological heat stress on the body than air temperature or heat index alone.

Heat Illness WBGT Threshold by Sport Activity Level Calculator

Calculate Wet Bulb Globe Temperature (WBGT) thresholds for safe sport participation. WBGT above 28C (high risk): reduce intensity; above 32C: consider cancellation for intense endurance activity.

Core Tools

Distance covered in 12 minutes (meters)

🏅 Sports Note: These calculators provide estimates based on population data and validated formulas. Individual results vary by physiology, training level, and testing conditions. Consult a qualified coach or sports scientist for personalized guidance.

How to Use

Enter the values for the scenario you are assessing. Calculate Wet Bulb Globe Temperature (WBGT) thresholds for safe sport participation. WBGT above 28C (high risk): reduce intensity; above 32C: consider cancellation for intense endurance activity. Use the wbgt heat threshold result to inform your calculation.

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Heat Illness WBGT Threshold by Sport Activity Level Calculator

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Frequently Asked Questions

What are WBGT action thresholds for sport?

How is WBGT different from air temperature?