American Academy of Pediatrics Heat Stress Guidelines

 
The American Academy of Pediatrics has given this series of guidelines for WBGT temperatures and sports:

 <75°F - No limits, but watch for heat problems

 75-78.6°F - Longer rest periods in the shade, rest periods every 15 minutes

79-84°F - Stop activity of unacclimatized and other persons with high risk, Limit activities of all others (disallow long distance races, cut down further duration of other activities)

>84°F - Cancel all athletic activities

Open the American Academy of Pediatrics heat stress in physical activity .pdf.