Vaisala's January - March (Q1/2009) results published on May 8, 2009



Vaisala publishes its Q1/2009 results on Friday, May 8, 2009 at 9 am.
The stock exchange release will be available on the company website
at www.vaisala.com. CEO's presentation will be published at 11.00 am
(GMT +3) on the same day at www.vaisala.com/investors.

Briefing
Briefing for analysts and media will be arranged in Hotel Kämp,
Akseli Gallen-Kallela meeting room, Pohjoisesplanadi 29, starting at
11.00 am. Please register to the briefing by email to Helena
Marjaranta, helena.marjaranta@vaisala.com.

Audiocast
A live audiocast of the presentation of Kjell Forsén, President and
CEO of Vaisala, will be sent starting at 11.15 am (GMT +3). The
audiocast will be available at www.vaisala.com/investors.  The
audiocast will be recorded and published at the same address at 1.00
pm (GMT +3) the same day.

More information: Helena Marjaranta, Senior Vice President,
Communications,
tel. +358 40 581 9102

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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 1200
professionals worldwide and is listed on the NASDAQ OMX Helsinki.
www.vaisala.com