Latest Wet Bulb Globe Temperature Observations

Heavy Rain and Flooding Possible in the Southwest U.S, Ohio Valley, and Hawaii

Heavy rainfall is expected to continue through Thursday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. Heavy rain and flash flooding is also expected over the southern Appalachians and Ohio Valley. Tropical Depression 15-E, southeast of Hawaii, is expected to bring heavy rain beginning today to the Big Island and Maui. Read More >

Texas UIL WBGT & Heat Index Calculator

Search by ZIP code, click on the map, or use the button to pull live weather observations from ASOS/AWOS.

Click anywhere on the map to set location & fetch data.

Ready to fetch data.

Heat Index

-- °F

WBGT

-- °F

Normal

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.