Datasets

The Statistical Yearbook provides a varied, statistics-based description of Helsinki and its residents. Many of the tables also present comparative data from the rest of the Helsinki Metropolitan Area, the Helsinki...

Monitoring site data includes permanent monitoring sites, mobile monitoring sites and passive samplers, as well as the annual average concentrations (μg/m3) of nitrogen dioxide (NO2) measured at these sites in...

The dataset includes data collected with an open map-based survey on the acceptability of wind power in Helsinki. The survey was carried out from 15 June to 31 August 2021, and almost 2,500 people responded. The...

Monthly and annual averages of air pollutants in the Helsinki metropolitan area, concentrations comparable to standards, maximum hourly values and data on the temporal representativeness of monitoring.

The City of Helsinki's environmental accounts are part of the city's environmental report. It describes the city's income, expenses and investments that have been generated primarily for environmental protection...

The City of Helsinki environment report is a joint report by the City Group that describes the implementation of the city's environmental objectives and the impact of its operations on the environment. The information...

The material contains the air quality indices of HSY’s air quality monitoring sites on an hourly basis. The air quality index divides air quality into five different classes, from good to very poor. The index classes...

Environmental permits in the City of Helsinki. The Environmental Protection Act defines the activities that require an environmental permit. The Environmental Protection Decree, on the other hand, determines whether...