WHO Heat–health action plans: Guidance, second edition
In June 2026, the World Health Organization (WHO) released the second, updated edition of its Heat–Health Action Plans (HHAPs) guidance. This framework supports national and local authorities to anticipate extreme heat events, protect populations facing disproportionate risks, and strengthen health systems against the growing threats of climate change.
The updated framework is structured around eight core elements on governance, Heat-Health Warning Systems, at-risk populations, communication strategies, health system resilience, exposure reduction, real-time surveillance, and evaluation.
To support these core elements, the guidance also contains “user action briefs” for five domains: health, occupational, urban/built environment, social care, and education/childcare. Finally, the document contains a public health message bank for use across sectors.
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