We monitor the concentrations of thoracic particles by sensors along main routes. You can examine the dust concentrations on main routes from different monitoring locations. The results are available as a graph or table. In the graphs, you can select one or more monitoring items that you want to view. The monitoring results are displayed hourly. You can select a day, week, or month as the reference period. The monitoring results are unverified hourly averages. NB! The results are raw data and errors have not been removed. Humidity can affect the monitoring results of the sensors. If concentrations are high and air humidity is greater than 95%, the high concentrations are likely due to humidity. The sensors are also located closer to the roadway than monitoring sites, which is why the particle concentrations of the sensors are at times very high.