​​​HSY monitors the air quality at 11 monitoring stations around the Helsinki Metropolitan Area. Air quality is continuously monitored in the influence areas of traffic and small-scale combustion as well as in the background areas, such as Luukki and Kallio.

In 2017, the temporary measuring stations are located in

• Mechelinkatu
  
• Rekola
  
• Airport 
  
• Olari

The air quality index results of last 12 hours are available for each measurement site by selecting the site from the shortcut menu of this web page.

​The air quality of the Helsinki region has been measured in over a hundred locations ».