Great tool!
App only keeps getting better! Great tool to have on hand in absence of a physical WGBT device.
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About
This tool calculates the Wet Bulb Globe Temperature (WBGT) for your location, a comprehensive measure of heat stress that considers temperature, humidity, wind, and sunlight. It provides color-coded safety levels and tailored guidance for various activities and professions.
✓Live outdoor WBGT calculation
✓Color-coded safety flag levels
✓Tailored guidance for different modes
✓Hourly and 14-day weather outlook
✓Fahrenheit or Celsius support
✓Reference chart for activity levels
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What's New in WBGT Heat
1.7.1
September 11, 2026
Minor bug fixes and improvements.
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FAQ
What is WBGT?
WBGT stands for Wet Bulb Globe Temperature. It is a measure of heat stress in direct sunlight, taking into account temperature, humidity, wind speed, and solar radiation. It is a more accurate indicator of heat strain than temperature alone.
Does WBGT have ads?
No, WBGT does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features.
What are the WBGT flag levels?
WBGT uses color-coded flag levels (White, Green, Yellow, Red, Black) to indicate different heat stress categories. Each level corresponds to recommended adjustments for physical activity to prevent heat-related illnesses.
How accurate are the WBGT estimates?
WBGT estimates are based on scientific models and local weather data. While generally reliable, they are estimates and may differ from on-site measurements. Always use your judgment and follow official guidance.
Can I view WBGT for different locations?
Yes, WBGT provides live outdoor WBGT for your current location and allows you to search for any city. You can also view hourly and 14-day outlooks for various weather parameters.
What devices does WBGT support?
WBGT is currently supported on iPhone devices. Future platform expansions may be considered based on user demand and development resources.
How often is WBGT updated?
The app was last updated on August 23, 2026, with version 1.3. Updates typically include improvements to data accuracy, feature enhancements, and bug fixes to ensure reliable performance.
What are the subscription options for WBGT Pro?
WBGT Pro is available via a monthly or annual auto-renewing subscription, or a one-time Lifetime unlock. The annual plan includes a 7-day free trial, and subscriptions can be managed or canceled in your device's settings.