# WBGT Heat: Wet Bulb Globe Temp — Wet Bulb Temperature Calc > Calculates Wet Bulb Globe Temperature (WBGT) for heat stress assessment. (iPhone/iPad app by JONATHAN STEVEN POOLE.) - Source: https://appshunter.io/ios/app/wbgt-heat-wet-bulb-globe-temp/id6794531164 (this page in markdown: same URL + `.md`) - Developer: [JONATHAN STEVEN POOLE](https://appshunter.io/developer/6794531376) - Category: Weather - Price: Free - Rating: 5.00/5 from 9 App Store ratings - Age rating: 4+ - Requires: iOS 18 · 1 MB - Languages: American English - Released: 2026-08-05 - Data updated: 2026-09-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/wbgt-heat-wet-bulb-globe-temp/id6794531164/reviews.md ## What is WBGT Heat? WBGT Heat shows the Wet Bulb Globe Temperature (WBGT) for your location, the heat-stress measure used by athletic trainers, the military, aviation, and workplace safety programs. Unlike a plain "feels like" number, WBGT combines temperature, humidity, wind, and direct sunlight to reflect the real strain heat puts on your body outdoors. FEATURES • Live outdoor WBGT for your current location or any city you search • Color-coded flag levels (White, Green, Yellow, Red, Black) with heat categories • Guidance tailored to your mode: Athlete, Military, Outdoors, Aviation, or OSHA • Hourly and 14-day outlook, view WBGT, air temp, humidity, wind, solar radiation, cloud cover, and pressure • Reference chart of flag categories and recommended activity levels • Fahrenheit or Celsius HOW IT WORKS WBGT is estimated from local weather (temperature, humidity, wind, solar radiation, and pressure) using the scientific model of Liljegren et al. (2008). Flag categories follow the U.S. military WBGT heat-category system (NAVMED P-5010). Weather data is provided by Open-Meteo. IMPORTANT This app is for general informational purposes only and is not medical, safety, or professional advice. WBGT values are estimates that may differ from on-site measurements. Always use your own judgment, follow official guidance, and seek medical help for any signs of heat illness. WBGT Pro is available as a monthly or annual auto-renewing subscription, or a one-time Lifetime unlock. The annual plan includes a 7-day free trial. Payment is charged to your Apple ID; subscriptions renew unless canceled at least 24 hours before the period ends. Manage or cancel in Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://heatstresstool.github.io/HeatStressTool/ ## Key features - 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 ## Chart rankings - #114 in Top Free · Weather (US App Store) - #106 in Top Grossing · Weather (US App Store) ## Frequently asked questions about WBGT Heat ### 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. ## Version history (last 5 releases) ### 1.4 — 2026-08-31 This update sharpens real-time WBGT accuracy: • Cloud cover now tracks actual sunlight, so readings match the conditions outside. • A smoother Real Sky Adjuster that starts at live conditions, with one-tap reset. • Cleaner labels and polish throughout. ### 1.3 — 2026-08-23 • Athlete Mode upgraded: Korey Stringer Institute thresholds, football & all-sports guidance, and automatic regional adjustment. • Real Sky Adjuster: a smooth full-sun-to-shade slider, plus your local reported cloud cover. • New playing-surface selection (Grass / Artificial Turf / Track). • Improved accuracy across the board. ### 1.2.1 — 2026-08-18 • New welcome guide for first-time users • Minor improvements ### 1.2 — 2026-08-11 • Introducing WBGT Pro. Unlock the Athlete, Military, Aviation & OSHA modes, full 24-hour and 14-day forecasts, and detailed forecast breakdowns (solar radiation, humidity, wind, pressure, and more). Start with a 7-day free trial. • NEW Pro Feature: Sun/Shade toggle for switching between full-sun and shaded conditions to get a more accurate WBGT reading. ### 1.1 — 2026-08-06 • Pull down on any screen to refresh • Auto-refreshes when you reopen the app and periodically while it's open • Cleaner main screen with a "last updated" time • Minor fixes and improvements ## Related topics [niosh tool](https://appshunter.io/ios/topics/niosh-tool) · [osha heat safety](https://appshunter.io/ios/topics/osha-heat-safety) · [warmup wsm](https://appshunter.io/ios/topics/warmup-wsm) · [slate safety](https://appshunter.io/ios/topics/slate-safety) · [osha-niosh heat safety tool](https://appshunter.io/ios/topics/osha-niosh-heat-safety-tool) · [osha niosh heat](https://appshunter.io/ios/topics/osha-niosh-heat) · [cinitemp](https://appshunter.io/ios/topics/cinitemp) · [body temperature app for fever](https://appshunter.io/ios/topics/body-temperature-app-for-fever) · [wbgt](https://appshunter.io/ios/topics/wbgt) · [heat safety pro](https://appshunter.io/ios/topics/heat-safety-pro) · [winlog mobile](https://appshunter.io/ios/topics/winlog-mobile) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*