It is clear that in Helsinki, more people walk, cycle and use public transport than in other municipalities in the metropolitan area. Nevertheless, we can work together to reduce the impact on air quality from emissions from private cars.
Traffic emissions pose health risks by reducing air quality. Exhaust emissions, such as fine particles and nitrogen dioxide and road dust, reduce air quality, especially near busy streets.
Exhaust emissions have decreased in recent years due to developments in vehicle technology and air pollution control measures in Helsinki.
Continuing to further reduce traffic emissions is very important. The COVID-19 epidemic in 2020 showed that a reduction in motor traffic improved air quality.
Traffic emissions reduce air quality in busy streets at peak times
Daily fluctuations in nitrogen dioxide at measuring stations in busy areas from Mondays to Fridays in 2020. Nitrogen dioxide concentrations are high, especially at peak times and at low winds.
You can view the impact of traffic emissions on air quality on the HSY air quality map
The air quality map is based on modelling, which combines information on air quality measurements, weather, emissions, land use and long-range transboundary air pollution. The map also provides information on how air quality will be changing in the coming hours at the location of your choice.