Helsinki Espoo Site logo Vantaa Kauniainen
Helsinki Espoo Vantaa Kauniainen

Helsinki metropolitan area air quality index

This dataset provides air quality data collected hourly by Helsinki Region Environmental Services (HSY) monitoring stations.

The air quality index splits air quality into five categories from good to very bad. This dataset is updated four times per year in March, June, September and December.

Data and Resources

Additional information

Geographical coverage
Links with more information
Administrator Helsingin seudun ympäristöpalvelut HSY
Administrator's webpage
Published 24.04.2015
Updated 16.04.2019
Update Frequency
Time series starts 1.1.2014
Time series accuracy
Licence Creative Commons Attribution 4.0
How to reference Source: Helsinki metropolitan area air quality index. The maintainer of the dataset is Helsingin seudun ympäristöpalvelut HSY. The dataset has been downloaded from Helsinki Region Infoshare service on 15.11.2019 under the license Creative Commons Attribution 4.0.


Creative Commons Attribution 4.0
CC-BY-4.0 [Open Data]



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