OSHA-NIOSH Heat Safety Tool 12+

Centers For Disease Control and Prevention

    • Free

iPhone Screenshots


Take precautions against outdoor heat while at work with the OSHA-NIOSH Heat Safety Tool. Featuring real-time heat index and hourly forecasts, specific to your location, as well as occupational safety and health recommendations from OSHA and NIOSH. The OSHA-NIOSH Heat Safety Tool is a useful resource for planning outdoor work activities based on how hot it feels throughout the day.

The OSHA-NIOSH Heat Safety Tool features:

• A visual indicator of the current heat index and associated risk levels specific to your current geographical location

• Precautionary recommendations specific to heat index-associated risk levels

• An interactive, hourly forecast of heat index values, risk level, and recommendations for planning outdoor work activities in advance

• Editable location, temperature, and humidity controls for calculation of variable conditions

• Signs and symptoms of heat-related illnesses including: heat stroke, heat exhaustion, rhabdomyolysis, heat cramps, and heat rash

• First aid information for heat-related illnesses

Take steps to work safely in the heat. Download this valuable tool today!

What’s New

Version 3.4

• Modified heat index meter to display 3 risk level categories instead of original 5 categories. Updated categories also have new labels.
• Content linked to these new risk level categories was modified to display new category labels.
• Spanish content updated to reflect new category labels.

Ratings and Reviews

2.8 out of 5
110 Ratings

110 Ratings

Huntress101 ,

Awesome but could be better

This app it awesome but I won’t give 5 stars. Because it should give you notifications of warnings or have a alarm of high heat index to tell you you need to get inside.

Trevor Muth ,

Perfect quick reference

With work not having a heat break schedule in place, I would like to start using this simple tool as a reference to when it gets too hot. I’d like to request a push notification feature for when hazards reach the warning and danger zones. Or a heat index we can set based on our company heat break policy, if it gets established.

Dhshhdd ,

Don’t use

The app doesn’t actually adjust throughout the day to what the actual temperature and humidity is, just what the forecast was. Right now, it says it’s 86 with a heat index of 92. But some showers that weren’t forecasted came through this morning and the temperature at the moment is actually only 80. So while it was forecasted to be 86 right now, it’s only 80 and the app says it’s currently 86 out. This can be incredibly dangerous if people are relying on this app and the temperature or humidity ends up being higher than originally forecasted. Do not rely on this app at all, basically just use it as a heat index calculator

App Privacy

The developer, Centers For Disease Control and Prevention, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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