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Heat index

Calculate locally using the displayed units and model. Floating-point estimates exclude real-world tolerances; verify specifications before design use.

heat-index-calculatorLOCAL WORKSPACE

Enabling local controls…

Inputs and settings

Processed in this tab without uploading or storing inputs. Each text field is limited to 32 KiB and complete output to 1 MiB; additional format and model limits apply.

Results

Review the settings and run. Editing inputs clears old results.

Processing model and limits

NOAA Rothfusz regression in °F, converted to °C, including low/high-humidity adjustments. Hot-weather model only (80–122°F); shade and light wind assumed. Reject conditions with preliminary apparent temperature below 80°F.

Data and model checked: Model reference ↗ToolHub source controls ↗

How to use this tool

Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.

When not to use it

NOAA Rothfusz regression in °F, converted to °C, including low/high-humidity adjustments. Hot-weather model only (80–122°F); shade and light wind assumed. Reject conditions with preliminary apparent temperature below 80°F.