Pollutionwatch: air quality benefits of lockdown continue

Pollutionwatch: air quality benefits of lockdown continue

There was an average decrease of 31% in nitrogen dioxide levels on London’s roads

The start of the UK lockdown brought news of reduced air pollution. Did it last?

Measurements from London show that initial improvements in nitrogen dioxide from traffic continued into April and May. Compared with the first 11 weeks of 2020 before lockdown, there was an average decrease of 31% on the capital’s roads. Greatest reductions were in central and inner London and followed improvements from the Ultra-Low Emission Zone.

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