Vaisala Oyj Stock exchange release March 11, 2009 at 16.30 pm Vaisala's annual report and summary list of 2008 releases published Vaisala Group's Annual Report and Financial Report for 2008 have been published and are available at www.vaisala.com/annualreport both in English and Finnish. Vaisala publishes its full Annual Report in online only. Printed copies of the Financial Report can be ordered at http://forms.vaisala.com/forms/publicationorder Additionally, Vaisala has published a summary list of 2008 stock exchange releases. The list is available in PDF format at http://www.vaisala.com/newsandmedia/stockexchangereleases/stockexchangerelease2008.aspx 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 Attachments * Vaisala Financial Report 2008 * Summary of Vaisala stock exchange releases in 2008 Further information: Helena Marjaranta, Senior Vice President, Communications, tel. +358 9 8949 2832 Distribution: NASDAQ OMX Helsinki Major news agencies and media