The project, co-financed by the European Union, has involved 13 elementary and secondary schools in the municipalities of Ponte de Lima, Barcelos, Guimarães, Póvoa de Varzim, Vila Nova de Gaia, Ilhavo, Caldas da Rainha, Sintra, Lisbon and Sesimbra.
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A study on air quality in 12 schools concluded that the atmospheric pollutants measured at the entrance of these establishments are above the future legal limits, revealed the Bora Ambientar Association.
Hourly profiles of PM10, PM2.5 and NO2 concentrations are consistent with the influence of road traffic and show increases in peak hours in the morning and afternoon.