Vaisala - Company Announcement

Vaisala Changes Schedule - January-September 2012 Results Published on Thursday November 1, 2012

Vaisala Corporation    Stock Exchange Release            October 19, 2012 at
9:30 a.m.

Vaisala publishes its January-September 2012 results on Thursday, November
1, 2012 at approximately 2 p.m. (EET). The stock exchange release and January-
September 2012 results will be available on Vaisala's website at
www.vaisala.com.

The CEO's presentation will be published on Thursday, November 1, 2012 at 4 p.m.
at www.vaisala.com/investors.

Briefing
Briefing for analysts and media will be arranged in Tapahtumatalo Bank,
Unioninkatu 20 in Helsinki, on Thursday, November 1, 2012 starting at 4 p.m.
Please register to the briefing by e-mail to helena.marjaranta[at]vaisala.com.

Audiocast
The presentation of Kjell Forsén, President and CEO, at the briefing will be
audiocast live on Thursday, November 1, 2012 starting at 4 p.m. at
www.vaisala.com/investors. It will also be published as a recording at the same
address on Thursday, November 1, 2012 at 6 p.m.

According to earlier information, the results would have been published on
Friday, November 2, 2012.

More information:
Helena Marjaranta, SVP, Communications
Tel. +358 40 581 9102

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 chosen weather-related and industrial markets.
Headquartered in Finland, Vaisala employs approximately 1400 professionals
worldwide and is listed on the NASDAQ OMX Helsinki stock exchange.
www.vaisala.com   www.twitter.com/VaisalaGroup

Distribution
OMX Nordic Exchange Helsinki
Main media
www.vaisala.com

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