Vaisala - Company Announcement

Preliminary information on Vaisala's 2010 financial result

Vaisala Oyj         Stock exchange release           February 1, 2011 at 13:45

Vaisala expects its net sales from 2010 to be approximately EUR 253.2 million
(comparable pro forma net sales in 2009, including QTT and Veriteq acquisitions
EUR 252.2 million), operating profit approximately EUR 11.8 (12.0) million, and
earnings per share approximately EUR 0.56.

Vaisala announced on November 5, 2010 an updated estimate on its net sales and
profitability. According to the estimate Vaisala estimated that its net sales
were expected to remain approximately at the previous year's level depending on
how fast the delivery capability would be restored and the shipment delays
caught up. The operating result was expected to decline from the previous year.
According to latest information available Vaisala estimates that its operating
profit is slightly higher than estimated on November 5, 2010.
Vaisala estimates that its net sales and operating profit in 2010 will be at the
same level as in 2009.

The numbers are unaudited and not based on the financial statements approved by
the Board of Directors. The company will publish its financial statements on
February 18, 2011.


Further information:
Jouni Lintunen, CFO, + 358 40 579 0181

Vaisala Corporation


Distribution:
NASDAQ OMX Helsinki

[HUG#1484269]