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Global to Local & Local to Global
Air Quality
Data source: UN Data
A graduate decrease in the index globally with the development of Covid-19 with some countries’ data unable to retrieve.
The table below defines the Air Quality Index scale as defined by the US-EPA 2016 standard:

Data source: UN Data
Data source: UN Data

Data source: London Datastore
A significant drop is shown in both PM2.5 and Nitrogen Dioxide while other factors remain fluctuated in the three-year period.
The map above demonstrates the changes in AQI between 2018 and 2020 for each country.
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