Vaisala - Changes board/management/auditors

Correction: Appointments in Vaisala's Management

Vaisala Corporation     Stock Exchange Release     March 16, 2011 7.00 p.m.

Correction to Vesa Pylvänäinen's background information in the announcement on
appointments in Vaisala's Management Group released Mar 16, 2011 at 1.30 p.m.
The correct paragraph reads:

Vesa Pylvänäinen joins Vaisala from Elcoteq, where he has worked for nine years
in various leadership positions, currently as Vice President, Business
Development for the company's Electronics Manufacturing Services (EMS) division.
He has extensive experience in Elcoteq ranging from global operations management
and operational excellence to account team management and business control. He
also has strong international background having had different management
assignments in the US, Hungary and Romania.

Further information
Helena Marjaranta
SVP, Communications
Tel. +1 303 585 1763

Distribution
OMX Nordic Exchange Helsinki
Main media

Vaisala is a global leader in environmental and industrial measurement. Building
on 75 years of experience, Vaisala contributes to a better quality of life by
providing a comprehensive range of innovative observation and measurement
products and services for meteorology, weather critical operations and
controlled environments. Headquartered in Finland, Vaisala employs approximately
1350 professionals worldwide and is listed on the NASDAQ OMX Helsinki.

www.vaisala.com


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