Texas has introduced a sweeping set of heat‑safety rules for high school football, effective from August 1, 2024, that require schools to monitor Wet Bulb Globe Temperature (WBGT) readings during outdoor practices.
The University Interscholastic League (UIL), which governs high school athletics across the state, defines WBGT as a composite measure that factors in temperature, humidity, wind speed and solar radiation. When the index reaches 82 °F in Class 3 zones — covering most of Texas — teams must shorten drills, insert mandatory hydration breaks and deploy rapid‑cooling stations.
A phased approach to acclimation
Class 2 schools, typically smaller districts, trigger modifications at a slightly lower threshold of 79.7 °F, adding extra rest periods and limits on equipment. In Austin, McCallum High School has adopted a schedule that pulls new WBGT readings every 30 minutes on the practice field, shifting sessions indoors when the index climbs too high and phasing in full pads only after a gradual acclimation period.
Coaches in the Austin Independent School District have completed annual heat‑safety training to ensure they can interpret WBGT data and operate cooling equipment such as the ‘taco’ — a tarp‑covered ice‑water immersion station — when conditions become unsafe.
The new protocol also highlights hidden heat sources, noting that artificial turf can absorb and radiate far more heat than natural grass, compounding the risk on hot afternoons. Smaller programs, lacking indoor facilities or a full complement of athletic trainers, often struggle to meet the standards, prompting some districts like Karnes City to move practices inside before the mandate even took effect.
While the safety measures are designed to protect athletes, especially those with pre‑existing medical conditions identified during yearly physicals, some educators worry about the impact on conditioning and on‑field performance. Reduced outdoor practice time could affect players’ stamina and increase injury rates, raising questions about how the state will balance health safeguards with competitive readiness.