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This study investigates the potential association between the daily distribution of the PM2,5 air pollutant and the initial spreading of COVID-19 in New York City We study the period from 4 March to 22 March 2020, and apply our analysis to all five counties, including the city, plus seven neighboring counties, including both urban and peripheral districts Using the Granger causality methodology, and considering the maximum lag period (14 days) between infection and the correspondent diagnosis, we found that the time series of the new daily infections registered in those 12 counties appear to correlate to the time series of the concentrations of the PM2 5 particulate circulating in the air, with 33 over 36 statistical tests with a p-value less than 0 005, thus confirming such a hypothesis Moreover, looking for further confirmation of this association, we train four different machine learning algorithms on a portion of those time series These are able to predict that the number of the new daily infections would have surpassed a given infections threshold for the remaining portion of the series, with an average accuracy ranging from 84% to 95%, depending on the algorithm and/or on the specific county under observation This is similar to other results obtained from several polluted urban areas, e g , Wuhan, Xiaogan, and Huanggang in China, and Northern Italy Our study provides further evidence that ambient air pollutants can be associated with a daily COVID-19 infection incidence

The New York City COVID-19 Spread in the 2020 Spring: A Study on the Potential Role of Particulate Using Time Series Analysis and Machine Learning