You can get reminders about the protective measures that should be taken at that risk level to protect workers from heat-related illness—reminders about drinking enough fluids, scheduling rest breaks, planning for and knowing what to do in an emergency, adjusting work operations, gradually building up the workload for new workers, training on heat illness signs and symptoms, and monitoring each other for signs and symptoms of heat-related illness.
Check it out: https://market.android.com/details?id=com.erg.heatindex&feature=search_result
OSHA's Heat Illness website - http://osha.gov/SLTC/heatillness/index.html
