Vaisala Oyj Stock Exchange Release 23.1.2008 at 8:45 Vaisala estimates the net sales for 2007 to be approximately EUR 224 million, the operating profit approximately EUR 35 million and the earnings per share EUR 1.42. The numbers here are unaudited and not based on financial statements signed by the Board of Directors. Due to some deliveries postponed to 2008, the Company estimates that its net sales for year 2007 will remain on the same level as in 2006. The net profit is expected to be slightly lower than in 2006, due to postponed deliveries and costs resulting from ongoing development projects. Vaisala Oyj's financial statements for 2007 will be published on 14.2.2008. Further information: Jouni Lintunen, CFO, +358 9 8949 2215, gsm +358 40 579 0181 Vaisala Oyj Distribution: Nordic Exchange Helsinki