- CEO
- Kai O. Öistämö
- Full Time Employees
- 2,465
- Sector
- Electronic technology
- Industry
- Electronic equipment/Instruments
- Address
- Vanha NurmijAerventie 21 Vantaa Finland 01670
- IPO Date
- Apr 20, 1994
- Business
- Vaisala Oyj develops and manufactures measurement instruments, systems, and services for environmental and industrial applications. Founded in 1936 and headquartered in Vantaa, Finland, the company serves customers in over 150 countries through offices and operations in Europe, North America, Asia-Pacific, and other regions; it operates in two primary segments, Weather and Environment, and Industrial Measurements, targeting meteorological institutes, aviation authorities, renewable energy operators, life sciences, pharmaceuticals, semiconductors, building automation, and maritime sectors. Core products and services encompass humidity and temperature instruments; dew point and barometric pressure sensors; carbon dioxide, oxygen, and moisture-in-oil measurement devices; wind and optical weather instruments; radiosondes, sounding systems, weather radars, and wind profilers; aviation, traffic, and hydrological weather systems; and data subscription services including customized applications and observation networks. In recent developments, Vaisala acquired Speedwell Climate Ltd in November 2024 to expand subscription-based weather risk tools for the insurance sector; purchased the WeatherDesk business from Maxar Technologies in December 2024; and acquired Quanterra Systems Ltd in September 2025 to launch its New Climate Business focused on atmospheric CO2 flux monitoring for carbon sinks and verification. The company, listed on Nasdaq Helsinki under VAIAS, employs approximately 2,500 people and continues to prioritize recurring revenue growth through digital services and greenhouse gas measurement innovations.