Lisbon achieved a significant improvement in air quality during the year of 2025. The Lisbon City Council revealed that the city met the European limit value for nitrogen dioxide (NO2), marking an important milestone in the environmental quality of the Portuguese capital.
This achievement was announced on International Clean Air Day, a date that celebrates and raises awareness about the importance of breathing clean air. The revelation was made by the municipal authorities, responsible for monitoring and environmental policies of the city.
This compliance with European air quality standards represents an accomplishment that had not been achieved since the Covid-19 pandemic period. During those years, restrictions and changes in mobility patterns and economic activity had affected the pollution levels in the city.
