Heat Stress (Basic) Calculator


Instructions (click to read instructions)

This assessment tool can be used as a basic guide and/or training tool to help identify and manage risks of heat related illness. It is based on the “Basic Thermal Risk Assessment” developed for the AIOH.

Note: Guidance on the determination of safe/unsafe working limits and the use of impermeable clothing is not provided by this tool, and should be sought from an appropriately qualified person such as an occupational hygienist.


The apparent temperature is an adjustment to the ambient temperature based on the level of humidity and is a useful indicator of actual conditions.

Not permeable
Single layer (light)
Single layer (moderate)
Multiple layers
Indoor
Full shade
Part shade
No shade
Room temperature
Warm on contact
Hot on contact
Burn on contact
Less than 30 min
30 min - 1 hour
1 hour - 2 hours
More than 2 hours
No
Yes
Simple
Moderate
Complex
None
One level
Two levels
More than two levels
Less than 10 metres
10 - 50 metres
50 - 100 metres
More than 100 metres
Less than 10 metres
10 - 30 metres
30 - 50 metres
More than 50 metres
Training given
No training given
Strong wind
Moderate wind
Light wind
No wind
None
Disposable half face
Reusable half face
Full face
Light
Moderate
Heavy
Yes
No