There was less traffic in 2020 because of the pandemic. | Joan Torres
Nitrogen dioxide in Palma's air was reduced by a third in 2020. The regional government's director-general for energy and climate change, Aitor Urresti, explains that data for the air-quality control station on Calle Foners have been compared and that the annual average of micrograms per cubic metre was 24. It was 32 in 2019.