CHECK THIS OUT:
The OSHA-NIOSH Heat Safety Tool mobile app, is available for both ios and Android devices. It shows the current risk level (minimal, low, moderate, high, or extreme) and forecasts the hourly heat index throughout the entire workday giving you the information you can use to adjust the work environment as needed to protect yourselves and each other.
More than 65,000 people seek treatment for heat-related exposure each year, and extreme heat is the number one cause of weather-related deaths.
Lindsey Baker
GO HERE:
https://www.osha.gov/SLTC/heatillness/heat_index/heat_app.html