Knowledge, attitude, and preparedness to respond to heat waves among informal workers in Dhaka, Bangladesh

Heat waves pose a growing threat amid climate change, impacting human health and the environment. This study focuses on the Dhaka Metropolitan Area (DMA) to explore the knowledge, attitudes, and preparedness of informal workers regarding heat waves. The research adopts a quantitative approach, employing a multi-stage sampling technique to survey 420 respondents in four selected thanas of DMA. Well-structured questionnaires, adapted from previous studies, were administered through face-to-face interviews, with real-time monitoring using Kobo Toolbox. Results reveal a significant gap in knowledge, with 66.66 % of respondents exhibiting a moderate level. Attitudes vary, as 49.6 % hold a mid-level attitude, expressing concern about heat waves but showing reluctance to change behavior. Preparedness is low, with 62.7 % having minimal readiness for heat-related emergencies. The study found statistically significant correlation between knowledge and attitude ( r = 0.202), between knowledge and preparedness ( r = 0.291), and between attitude and preparedness ( r = 0.142). The findings contribute to practical insights for policymakers to enhance resilience among informal workers, informing public health policies, identifying vulnerable groups, and guiding future research and interventions in the context of heat waves and climate change. • Informal workers had moderate knowledge and attitude towards heat waves. • Preparedness level was found to be very low among the respondents. • There is a statistically significant relationship among knowledge, attitude, and preparedness. • Upper class respondents had better attitude towards heat waves. • Outdoor workers were better prepared.