Vaisala Corporation Stock exchange release March 8, 2011 1.30 p.m. Vaisala's Annual Report and Financial Report for 2010 have been published in English and Finnish. The online Annual Report is available online atwww.vaisala.com/annualreport. The Financial Report can be ordered in print at forms.vaisala.com/forms/publicationorder. In addition, Vaisala has published the 2010 Corporate Governance Statement and the summary of 2010 stock exchange releases. These documents are available at www.vaisala.com/en/investors/corporategovernance/Pages/default.aspx. Further information: Liisa Ahtiluoto, Communications Manager, tel. +358 9 8949 2725, emailliisa.ahtiluoto@vaisala.com Attachments: * Vaisala Financial Report 2010 * Summary of Vaisala stock exchange releases in 2010 Distribution: NASDAQ OMX Helsinki Major media [HUG#1495330]