Vaisala's Annual Report, Financial Statements and Corporate Governance Statement for 2011 Published

Vaisala Corporation Stock Exchange Release March 5, 2011 at 3.30 p.m. The online Annual Report is available atwww.vaisala.com/annualreport.  The printed Financial Report can be ordered at www.vaisala.com/publications, and it is also available in pdf format at http://www.vaisala.com/en/investors/reports/Pages/default.aspx. The 2011 Corporate Governance Statement is available athttp://www.vaisala.com/en/investors/corporategovernance/Pages/default.aspx  . Further information: Liisa Ahtiluoto, Communications Manager, tel. +358 9 8949 2725, liisa.ahtiluoto@vaisala.com Attachments: Vaisala Financial Report 2011 Distribution: NASDAQ OMX Helsinki Major media [HUG#1591285]