Hanoi Air Quantitative Report: A Cross-Sectional Study of Knowledge, Awareness and Practices related to Air Pollution among Residents of Hanoi, Vietnam

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Abstract
The study on which this paper is based assessed public knowledge, awareness, and practices regarding air pollution among residents of Hanoi, Vietnam, focusing on its causes, health impacts, and mitigation strategies. It sought to provide evidence-based recommendations for policymaking and public health interventions to address air pol-lution challenges. A cross-sectional survey was conducted with 521 individuals in suburbs around Hanoi. The survey assessed participants' sociodemographic characteristics, knowledge of air pollution, attitudes, and behaviours. Data were analysed statistically using SPSS Statistics for Windows, version 29.0. Nearly all participants (98.3%) were aware of air pollution, with 65.3% attributing it to human activities and 61.2% recognising specific air pollutants as primary contributors. The majority (93.9%) acknowledged health impacts, citing respiratory infections (55.1%) and sinus issues (51.2%) as prevalent con-cerns. Vulnerable groups, such as children under five (82.3%) and adults over 65 years old (77.4%), were identified as disproportionately affected. Social media (68.9%) and television (58.3%) were the dominant sources of information. Despite recognising the importance of air pollution (98.5%), active engagement in environmental organisations was minimal (1.9%), and systemic actions, such as supporting renewable energy markets (1.4%), were underrepresented. Most participants (84.3%) reported personal mitigation efforts, in-cluding energy-saving practices (35.5%) and walking instead of driving a car or bike (35.3%).While awareness of air pollution and its health impacts is high among Hanoi residents, proactive engagement in systemic solutions remains limited. Policymakers should prioritise community-based programs, public-private partnerships, and educa-tional campaigns to bridge gaps between awareness and action. Tailored interventions addressing demographic and cultural factors are essential to foster collective responsibility and long-term change.

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