City weather monitoring
The City weather monitoring mapping tool displays real-time temperature and humidity observations from urban climate measurement networks in Helsinki, Tampere and Rovaniemi. The online tool supports decision-making related to urban development and climate change adaptation by providing open, accurate and up-to-date information on local urban climates. It is available to anyone interested in urban environmental conditions.
City weather monitoring
Select a city, choose a measurement station, and explore the data.
The tool provides real-time observations from three cities
The City weather monitoring tool offers a real-time view of temperature and humidity conditions in Helsinki, Tampere and Rovaniemi. Altogether, the measurement networks include dozens of urban weather stations: 30 in Helsinki, 23 in Tampere and 12 in Rovaniemi.
The stations are placed in different parts of each city to capture a variety of urban microclimates. They are located, for example, in densely and sparsely built areas, parks, near bodies of water, as well as in both higher and lower terrain.
Information is available on a map and as time-series plots
Users can view real-time observations directly on the map, where the stations are displayed as points (figure 1). The map view provides a quick overview of temperature and humidity variations within a city. A table in the online tool lists each station’s coordinates, elevation above sea level, and a brief description of the surrounding environment.
Figure 1. Locations of the urban measurement network stations in a) Helsinki, b) Tampere and c) Rovaniemi. TAPSI urban measurement stations, black squares: Finnish Meteorological Institute weather stations. Map source: National Land Survey of Finland.
Users can select 1–5 stations at a time and examine their observations as time-series graphs, which show the temperature and humidity values of the past 1–14 days. The time-series plot and its underlying data are also available for download. The tool is available in three languages: Finnish, Swedish and English.
The tool supports climate change adaptation by providing information on urban microclimates
The high-resolution measurement data provided by the City Weather Monitoring tool is an important resource for climate change adaptation. It enables more informed, up-to-date decision-making in urban development. The measurements can be used, for example, in urban planning, green area development, and reducing heat-related impacts.
Continuous monitoring data also allows cities and experts to follow how climate change progresses and affects local conditions. The extensive station networks reveal how different urban structures – such as buildings, parks, water bodies and variations in elevation – shape local weather conditions. This information can be used, for example, to compare how new development areas or added urban greenery affect local temperatures.
The tool is open to anyone interested in urban environments
In addition to experts, the tool can be used by anyone curious about urban conditions. For example, a homebuyer can compare the conditions of different residential areas, while property managers can check the environmental conditions in the areas they maintain.
Measurement data is openly available
Data from the urban climate measurement networks can be downloaded from the Finnish Meteorological Institute’s open data repository. Temperature observations from the urban networks are available from the following dates and references:
- Helsinki: from December 2024 onwards [1]
- Rovaniemi: from June 2025 onwards [2]
- Tampere: from July 2023 onwards [3]