Vaisala - Company Announcement

Vaisala's 2010 January - December results published on February 18, 2011

Vaisala Corporation        Stock Exchange Release                       February
9, 2011 at 2:30 p.m.


Vaisala publishes its Q4/2010 results on Friday, February 18 at 9:00 a.m. The
stock exchange release will be available on the company website at
www.vaisala.com. CEO's presentation will be published at 12:00 noon (GMT +2) on
the same day at www.vaisala.com/investors.

Briefing
Briefing for analysts and media will be arranged in Hotel Kämp, Paavo Nurmi
meeting room, Pohjoisesplanadi 29, starting at 12.00 noon. A light lunch will be
served. Please register by email toliisa.ahtiluoto@vaisala.com.

Audiocast
A live webcast of the presentation of Kjell Forsén, President and CEO of
Vaisala, will be sent starting at 12:00 am (GMT +2). The webcast will be
available atwww.vaisala.com/investors.  It will be recorded and published at the
same address by 2:00 p.m. (GMT +2) on the same day.


More information: Liisa Ahtiluoto, Communications Manager,
liisa.ahtiluoto@vaisala.com, tel. +358 40 730 7695

Distribution:
NASDAQ OMX Helsinki Oy
Finnish News Agency
Other key media


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Vaisala is a global leader in environmental and industrial measurement. Building
on more than 70 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 over
1400 professionals worldwide and is listed on the NASDAQ OMX Helsinki.
www.vaisala.com

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