Braga once again exceeded the annual legal limit for nitrogen dioxide (NO₂) on Avenida Frei Bartolomeu dos Mártires, ranking again among the Portuguese urban areas with the highest concentrations of this pollutant. The situation represents a violation of the air quality standards established by law.
The data is disclosed by Zero and the Portuguese Council for Health and Environment (CPSA), organizations that regularly monitor air quality in Portugal. These entities are responsible for collecting and analyzing atmospheric pollutant concentration values in various areas of the country.
Nitrogen dioxide is mainly associated with vehicle traffic, being one of the main pollutants resulting from combustion in vehicle engines. High concentrations of this gas have a direct impact on public health, particularly affecting vulnerable groups such as children, elderly people, and those with respiratory diseases.
