Inappropriately managed occupational heat exposure remains a critical health and safety concern within the Australian resources industry. In these extreme environments, approximately 35 per cent of workers experience significant physiological heat strain on a regular basis (Flouris et al, 2018). These environmental stressors present complex challenges to occupational hygiene, directly impacting operational readiness, safety, and economic output. Research indicates that occupational heat stress correlates with a 30 per cent loss in overall worker productivity, accompanied by a 2.6 per cent decline in cognitive and physical performance for every degree the Wet Bulb Globe Temperature (WBGT) rises beyond 24°C (Zander et al, 2015). Historically, the resources sector has relied heavily on reactive, lagging indicators to manage this risk. Furthermore, while worksites routinely record meteorological data, this information is frequently decentralised. Relying on macro-level weather data from regional stations often leaves critical information siloed. Consequently, organisations struggle to assess localised working environments, implement hierarchy-of-control measures, or evaluate worker hydration based on dynamic, site specific conditions. This disconnect highlights a significant gap in proactive, evidence-based heat stress risk management.