Annual PM2.5 pollutant reductions in selected cities worldwide 2019-2020

Observed and de-weathered PM2.5 reductions in select major cities worldwide in 2020 compared to 2019

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Release date

March 2021

Region

Worldwide

Survey time period

2020

Supplementary notes

PM2. 5 refers to atmospheric particulate matter that have a diameter of less than 2.5 micrometers. *De-weathered data eliminates the influence of weather on air pollution.

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