General description A data collection experiment using machines and a measuring point to collect microparticle concentrations during street cleaning to assess air quality. PM10, PM2.5 and PM1 concentrations from...

Citynature.eu offers an open REST API interface that can be used to utilise the information about nature trails from both Helsinki and Tallinn available on the site. The contents of the website are not available in...

Helsingin historialliset tilastot on kokoelma Helsingin kaupungin historiaa kuvaavia tilastotietoja väestöstä, asuntokunnista, asumisesta, työelämästä ja koulutuksesta. Tilastojen aikasarjat vaihtelevat alkaen...

The Service Map developed by the City of Helsinki shows the locations and services offered by the cities of the Helsinki Metropolitan Area, as well as Vantaa and Kerava and Western Uusimaa Wellbeing areas. The map...