About HeatGuard
Weather data should lead to a clearer decision.
HeatGuard turns heat index, estimated WBGT, UV and hourly forecasts into practical outdoor-planning context. The website helps anyone compare times; the iPhone app adds saved places, monitoring and alerts.
Why it exists
A high temperature alone does not explain humidity, solar exposure or the timing of risk. HeatGuard puts those signals in one legible view without pretending a forecast knows the individual.
Who maintains it
The HeatGuard product and editorial team maintains the forecast experience, calculators and guides. We cite authoritative sources and state when a value is modeled rather than measured.
Where it stops
HeatGuard is not a medical device, emergency service, official warning system, WBGT instrument or substitute for workplace, school, team or governing-body protocols.
See exactly how the numbers are produced.
Our methodology documents forecast caching, heat-index calculation, estimated WBGT and the best-window score.