Idaho heat rules for high school sports.
Idaho's current activity regulations publish practical heat-stress precautions but not a statewide environmental stop-work table.
What coaches need to know
- Water must be on the field, readily available at all times, and athletes should never have access restricted.
- IHSAA recommends at least a 10-minute water break for every 20 minutes of heavy exercise in heat.
- Conditioning should progress gradually for heat acclimatization, with coaches watching closely for nausea, weakness, vomiting, cramps, visual disturbance, or unsteadiness.
- The regulations do not publish a statewide numeric WBGT or heat-index cancellation table; follow the school plan.
No statewide numeric table is shown. The public source provides guidance without one complete operational action table, so PracticeCast does not invent thresholds.
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Use the current governing document. Local schools, districts, leagues, activities, and medical staff may apply additional or stricter requirements.