A review of online public health messaging for heatwaves and cold weather in London
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Authors
Angharad Shambler
Maria Ikonomova
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Issue Date
06-May-26
Type
Conference Abstract
Language
Keywords
Climate
Alternative Title
Abstract
Climate change is increasing the frequency and severity of heatwaves and cold weather events which pose significant health risks to Londoners. Exposure to extreme temperatures is associated with cardiovascular morbidity and mortality, respiratory illness, exacerbation of chronic conditions, and worsening mental health.
Local authority public health teams can play a crucial role in mitigating these impacts by sharing effective risk communication with residents and promoting preventative measures. Yet, existing studies have not examined the extent or quality of extreme weather and health information published on London local authority websites, nor the degree to which this content aligns with UK Health Security Agency's (UKHSA) evidence-based guidance.
This study addressed this gap by analysing how all thirty-three Greater London local authorities communicate heatwave and cold‑weather health risk information to residents via their public webpages. Specifically, a review was conducted to examine the inclusion of key information captured in UKHSA's 'Beat the Heat' and 'Keeping Warm and Well' guidance including health impacts, populations at heightened risk, and recommended protective advice and actions on staying healthy in hot and cold weather.
The findings uncovered significant variation in the information that was published across local authorities in London and that best practice advice was not always shared. These results highlight a need for improved local authority public webpages to ensure that critical extreme weather and health risk information is readily available to residents and aligns with national guidance. The findings from this research can support local authorities to review and update their online content, helping residents to stay safe in future extreme weather events.