Air pollution in China back to pre-Covid levels and Europe may follow

Air pollution in China has climbed back to pre-pandemic levels, and scientists say Europe may follow suit. Air pollution causes at least 8m early deaths a year, and cleaner skies were seen as one of the few silver linings of Covid-19. Experts have called for action to help retain the air quality benefits of lockdowns, and measures taken to date have included expanding cycle lanes and space for walking in cities. Data from the Centre for Research on Energy and Clean Air (Crea) shows concentrations of fine particles (PM2.5) and nitrogen dioxide (NO2) across China are now at the same levels as one year earlier. At the height of the country’s coronavirus response in early March, NO2 levels were down by 38% from 2019 and levels of PM2.5 were down by 34%.