Global city PM2.5 levels COVID-19 lockdown 2020

Because of the outbreak of the coronavirus (COVID-19), many countries around the world were put into lockdown. In February, average levels of PM2.5 pollution in the Chinese city of Wuhan were 35.1 micrograms per cubic meter. This was a reduction of approximately 44 percent when compared to the same period in 2019.

For further information about the coronavirus (COVID-19) pandemic, please visit our dedicated Fact and Figures page.

PM2.5 pollutant levels in select cities during COVID-19 lockdowns in 2020* (in micrograms per cubic meter**)

Characteristic	PM2.5 pollution in micrograms per cubic meter (µg/m3)
Wuhan, China	35.1
Delhi, India	32.8
Mumbai, India	28.8
Seoul, South Korea	24.1
Rome, Italy	16.7
London, UK	16.2
São Paulo, Brazil	10.1
Madrid, Spain	6.4
Los Angeles, US	5.5
New York City, US	4.4

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Release date

April 2020

More information

Region

Worldwide

Survey time period

2020

Supplementary notes

*Lockdown dates:
Mar 23 to Apr 13 in Delhi, London, Los Angeles, Madrid, Mumbai, New York City, Sao Paulo
Mar 9 to Mar 30 in Rome
Feb 26 to Mar 18 in Seoul
3 Feb to Feb 24 in Wuhan

**PM2.5 = Particulate matter with a diameter of 2.5 micrometers or less

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