Air pollution goes down as Europe takes hard measures to combat coronavirus
The European Environment Agency’s (EEA) data confirm large decreases in air pollutant concentrations — of nitrogen dioxide (NO2) concentrations in particular — largely due to reduced traffic and other activities, especially in major cities under lockdown measures. Reductions of around half have been seen in some locations. The EEA’s data are measured hourly, on the ground, at about 3,000 monitoring stations across European countries.
In Barcelona, average NO2levels went down by 40 % from one week to the next. Compared with the same week in 2019, the reduction was 55 %.