Thoracic particles

Coarse particles in the air are called thoracic particles. Coarse particles mainly include street dust. The abbreviation PM10 refers to coarse particles.

Concentrations are high when 24-hour average is higher than 50 µg/m3. This level is exceeded more than 30 times a year in areas with heavy traffic. When the limit level is exceeded, it will be recorded in a list.

You can check the concentrations of thoracic particles on an hourly basis. The graphs show the results both from the last 24 hours and a week which are unverified hourly averages. The unit is a microgram of air per cubic metre (µg/m3).