How It Works
Uses the preliminary Steadman approximation and the Rothfusz regression when the preliminary average is at least 80°F, with NWS humidity corrections.
Assumes shade and light wind. Direct sun and individual health conditions can substantially change heat risk; this is not a work/rest or medical clearance tool.
Reference Sources
FAQs
How does this calculator work?
Uses the preliminary Steadman approximation and the Rothfusz regression when the preliminary average is at least 80°F, with NWS humidity corrections.
What assumptions should I check?
Assumes shade and light wind. Direct sun and individual health conditions can substantially change heat risk; this is not a work/rest or medical clearance tool.