Health and disaster risk reduction are important and necessary components in building a smart city, espe-cially when climate change may increase the frequency of extreme temperatures and the health risks of urban dwell-ers. However, limited knowledge is available about the best way to disseminate weather waings and health protection information. This study explores the weather information acquisition pattes of the Hong Kong public and examines the sociodemographic predictors of these pattes to establish the potential public health implications of smart city development. A population-based, stratified cross-sectional, random digit dialing telephone survey was con-ducted among the Cantonese-speaking population aged over 15 years in Hong Kong in early 2016. Analyses were conducted based on 1017 valid samples, with a response rate of 63.6%. Cold Weather Waings were well dis-seminated in Hong Kong, with 95.7% of the respondents reporting awareness of the public waings. Television and smartphone apps were the two most important channels for weather information acquisition. Age and education level are the main social-demographic variables associated with the current utilization and future preference of smartphone technology. Among those who were not using a preferred channel to acquire weather information, 61.3% considered switching to a smartphone app. Moreover, the pattes of individual health protection measures and self-reported health impacts were significantly different between smart-phone app users and non-users. Weather information dis-semination should be tailored to the sociodemographic characteristics of the users.