Vaisala - Company Announcement

Vaisala's January - June (Q2/2009) results published on August 11, 2009

Vaisala                               Stock Exchange Release
                      27.7.2009 at 1.30 pm


Vaisala's January - June (Q2/2009) results published on August 11,
2009

Vaisala publishes its Q2/2009 results on Tuesday, August 11, 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, Paavo
Nurmi meeting room, Pohjoisesplanadi 29, starting at 11.00 am. Please
register to the briefing by email to Liisa Ahtiluoto,
liisa.ahtiluoto@vaisala.com.

Audiocast
A live audiocast of the presentation of Kjell Forsén, President and
CEO of Vaisala, will be sent starting at 11.00 am (GMT +2). The
audiocast will be available at www.vaisala.com/investors.  It will be
recorded and published at the same address at 1.00 pm (GMT +2) on the
same day.


More information: Liisa Ahtiluoto, Communications Manager, tel. +358
40 730 7695


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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