Decades of innovation

Vaisala's origins date back to the 1930s when Professor Vilho Väisälä, Vaisala's founder and long-time managing director, invented some of the operating principles of a radiosonde. The company was established in 1936 in Finland, and the first radiosondes were manufactured in the basement of a residential building in the center of Helsinki. From a modest start, the company evolved to become a world leader in many measurement fields.

Today Vaisala employs over 1,850 people and exports 98% of its production to over 150 countries. Curiosity, the desire to meet challenges and an extraordinary ability to innovate are at Vaisala's core, both past and p​resent.

Vaisala is established by Vilho Väisälä on the success of RS11

the first Vaisala radiosonde. The company starts radiosonde manufacturing in the basement of a residential building in the center of Helsinki.  The first delivery of 20 radiosondes is sent to MIT, USA.

First radiosonde RS11

wins a gold medal at the World Fair in Paris.

New premises in Pasila, Helsinki

provide the office for the company. The company is named Mittari Oy, with 28 employees.

Radiotheodolite for upper-air wind measurement

is introduced. The Vaisala Sounding System becomes completely electronic.

The company moves to new premises in Vantaa, Finland

and changes its name to Vaisala Oy, leaving out the double dots from the Väisälä family name.

The first issues of Vaisala News customer magazine are published

Today the magazine provides stories and articles in both online and print formats

Vilho, Yrjö and Kalle Väisälä Foundation is established

when Vilho Väisälä donates 3,000 Vaisala shares to the Finnish Academy of Science and Letters. The fund provides annual grants to research in mathematics, physics, meteorology, and astronomy.

Thin-film technology for
HUMICAP® humidity sensors is developed.

The world-first groundbreaking technology revolutionizes the humidity measurement market. The new sensor is used to measure humidity both outdoors and indoors.

The first Automatic Weather Stations are developed

for collecting surface observations. This is the start of Vaisala's aviation weather business.

Vaisala's first cleanroom is built

enabling the design and manufacturing of semiconductors in-house. This marks the beginning of Vaisala's industrial business.

RS80 radiosonde family

brings a new standard in synoptic upper-air weather observation into the market.

Vaisala introduces Vaisala BAROCAP®

that is silicon barometric pressure sensor technology.

Professor Vilho Väisälä Award is established

by Vaisala and the World Meteorological Organization (WMO) for the best instrumentation paper in meteorology and related fields.

Vaisala becomes a public company.

The company’s A shares are listed on the Helsinki Stock Exchange.

CARBOCAP® and DRYCAP® expand industrials measurements

into carbon dioxide and dewpoint measurements. The CARBOCAP® carbon dioxide sensor is based on silicon technology and the DRYCAP® dewpoint sensor on thin-film polymer technology.

RS92 radiosonde family is launched.

The new high-performing sensors and GPS application for wind measurement are uniquely designed for radiosonde use.

New cleanroom provides industry-leading quality and reliability

enabling Vaisala to manufacture humidity, barometric pressure, carbon dioxide, and dewpoint sensors in-house.

New remote sensing road surface state instrument

utilizes infrared optics and laser technology.

Innovative C-band weather radar

provides accurate dual polar metric measuring and new concept in antenna design.

GLD360, a global lightning information service

provides accurate real-time lightning information.

Vaisala acquires Veriteq

a leading company in continuous monitoring systems to strengthen Vaisala’s position in the steadily growing global life science markets.

Vaisala's new head office opens

and receives the LEED Gold certificate. Most of the heating energy is generated by the building’s own geothermal energy system.

Vaisala acquires Second Wind and 3TIER

expanding into the renewable energy market with a wider range of products and services.

Vaisala launches the new Road Weather Station RWS200.

Combined with industry-leading decision support software, it provides intelligent weather information for road authorities.

Vaisala RS41 radiosonde

launches the 4th generation sounding system.

Vaisala Commits to Renewable Energy

aiming for 100% by 2020.

New moisture, hydrogen and temperature MHT410 transmitter

opens new opportunities in the power generation and transmission market.

Vaisala expands its offering to the growing air quality monitoring market

acquiring new products and technology.

Vaisala OptimusTM DGA Monitor for Transformers

is a new online measurement device for transformer dissolved gas analysis, building on unique technology to solve problems in transformer maintenance.

Vaisala acquires Finnish IT company Vionice

specialized in computer vision and artificial intelligence, bringing Vionice's product portfolio globally to its road and rail customers.