We monitor air quality in 2020 in Porvoo Mannerheiminkatu 10, which is a traffic environment in the centre of Porvoo. Before this, air quality was monitored in 2004, 2007, 2011 and 2016.
In Porvoo we measure, among others, the concentrations of nitrogen dioxide and respirable particles in the air. Hourly concentrations are shown on our website. The results describe the air quality of an area with busy traffic.
The results are presented here through an air quality index that correlates the pollutants to their health effects. The index varies from good to very poor. When the air quality is poor (red colour), people sensitive to air pollutants may show some symptoms.
The graph shows the air quality indexes from the last 12 hours.