The pandemic of coronavirus disease 2019 (COVID-19) is generating a high number of total infected individuals and deaths. One of the current questions is how climatological factors and environmental pollution can affect the diffusion of COVID-19 in human society. This study endeavours to explain the relation between wind speed, air pollution and the diffusion of COVID-19 to provide insights to constrain and prevent future pandemics and epidemics. The statistical analysis here focuses on case study of Italy and reveals two main findings: 1) cities with high wind speed have lower numbers of COVID-19 related infected individuals; 2) cities located in hinterland zones (mostly those bordering large urban conurbations) with little wind speed and frequently high levels of air pollution had higher numbers of COVID-19 related infected individuals. Results here suggest that high concentrations of air pollutants, associated with low wind speeds, may promote a longer permanence of the viral particles in the air, thus favouring an indirect means of diffusion of viral infectivity of the novel coronavirus (SARS-CoV-2), in addition to the direct diffusion with human-to-human transmission dynamics.

2019年冠状病毒疾病大流行（COVID-19）导致大量总感染个体和死亡。当前的问题之一是气候因素和环境污染如何影响COVID-19在人类社会中的传播。这项研究致力于解释风速，空气污染与COVID-19扩散之间的关系，以提供见解来限制和预防未来的大流行和流行病。这里的统计分析着重于意大利的案例研究，并揭示了两个主要发现：1）高风速的城市中与COVID-19相关的感染个体数量较低；2）腹地带的城市（大多数是与大型城市接壤的城市）风速很小且空气污染水平经常很高，感染COVID-19的人数较高。