COVID-19 and Air Quality: Evidence from China

Wen Ming, Zhengqing Zhou, Hongshan Ai, Huimin Bi and Yuan Zhong

Emerging Markets Finance and Trade, 2020, vol. 56, issue 10, 2422-2442

Abstract: To test the impact of the COVID-19 pandemic on air quality, this article matches the city-level real-time air quality monitoring data with the big data on population migration provided by Baidu. The article uses urban samples from the same data sample of the Chinese lunar calendar in 2019 to construct the counterfactual status of the COVID-19 pandemic. Then, the difference-in-differences (DID) model is employed to estimate the impact of the COVID-19 pandemic on air quality. It is found that the COVID-19 pandemic caused PM2.5 and AQI to decrease by about 7 μg/m3 and 5-points, respectively.

Date: 2020
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DOI: 10.1080/1540496X.2020.1790353

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