Latest Wet Bulb Globe Temperature Observations

Showers and Thunderstorms from the Southern Plains into the Mid-Mississippi Valley; Record Warmth in the Plains and Midwest

Heavy rain and widely scattered severe storms capable of large hail, damaging winds, and possibly a tornado are expected over portions of the central and southern Plains into the Lower Missouri Valley. Unseasonable warmth will continue for a few more days across the Midwest and Southeast where several daily record highs could fall. Read More >

Texas UIL WBGT & Heat Index Calculator

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Heat Index

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WBGT

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Regional Guidelines: Texas UIL Class 3

UIL WBGT Activity Chart

Flag Level	Class 2 (West TX)	Class 3 (Central/East/South TX)
🟢 Low	< 79.7 °F	< 82.0 °F
🟡 Elevated	79.7 - 84.6 °F	82.0 - 86.9 °F
🟠 Moderate	84.7 - 87.6 °F	87.0 - 90.0 °F
🔴 High	87.7 - 89.7 °F	90.1 - 92.0 °F
⬛ Extreme	≥ 89.8 °F	≥ 92.1 °F

UIL Regional Classification Notes:

Category 2 (West TX / Panhandle): Higher elevation and lower ambient humidity allow for greater evaporative cooling; thresholds trigger earlier.
Category 3 (Central, East, Coastal & South TX including Laredo): Sustained high ambient heat and humidity require modified activity thresholds.

🟡 Category 2 (West TX) | 🔵 Category 3 (Central, East & South TX)

UIL Activity & Practice Modifications:

Low (Green): Normal activities. Provide at least three separate rest breaks each hour (min 3 min each).
Elevated (Yellow): Use discretion for intense/prolonged exercise. Min 3 rest breaks per hour (4+ min each). Rapid cooling zone required.
Moderate (Orange): Max 2 hours outdoor practice. Min 4 rest breaks per hour (4+ min each). Football: Shorts, helmets & shoulder pads only. No conditioning.
High (Red): Max 1 hour practice. No protective equipment or conditioning. 20+ mins of rest breaks distributed throughout the hour.
Extreme (Black): No outdoor workouts or contests. Delay or move activities indoors.

Guidelines based on official University Interscholastic League (UIL) Health & Safety Heat Stress Policies.