Helsinki metropolitan area air quality statistics - Excel file

From the dataset abstract

This dataset provides Helsinki Region Environmental Services (HSY) air quality information starting from 1985. The data also contains information on when and what has been measured at the...

Source: Pääkaupunkiseudun ilmanlaadun tunnusluvut

Additional information

Field Value
Format XLSX
Size 0.83 MB
Coordinate system ETRS-GK25
Time series starts 1985-01-01
Time series accuracy