Vaisala - Company Announcement

Vaisala renewed its segment reporting

Vaisala published its new strategy in November 2008. Going forward,
the company will focus on markets with the biggest growth potential
in the environmental measurement business. The company will seek
growth from the current and new market segments. Vaisala also
announced that it adopts a market segment based reporting model. From
the first interim report in 2009, Vaisala Group's business will be
reported in three segments, which are Meteorology, Weather Critical
Operations and Controlled Environment.

Meteorology consists of Emerging markets and Established markets. The
Meteorology business area serves national meteorological and
hydrological institutes, whose primary interest is to provide
national weather information and forecasts.

Weather Critical Operations consists of Airports, Roads, Defense,
Wind Energy and Targeted Business Development segments. This business
area focuses on customers whose operations or businesses are affected
by the weather, like aviation customers, road authorities, defense
forces and wind parks.

Controlled Environment consists of Cleanrooms and Chambers, Building
Automation and Targeted Industrial Applications segments. This
business area includes customers who operate in tightly controlled
and demanding areas where the measurement of precise environmental
conditions is required to increase operational quality, productivity
and energy savings.

The geographical segments of the Vaisala Group are Americas, Europe,
Middle East and Africa (EMEA) and Asia Pacific (APAC).

Vaisala's January - March interim report will be published on May 8,
2009.

2008 net sales and operating profit based on the new segments


Net sales (MEUR)              Q1   Q2   Q3   Q4  2008
Meteorology                 12.6 16.5 14.5 21.2  64.9
Controlled Environment      13.7 14.0 13.2 13.4  54.3
Weather Critical Operations 20.1 29.6 30.6 43.0 123.3
Other                        0.0  0.0  0.0  0.0   0.0
Total                       46.4 60.1 58.4 77.6 242.5



Operating profit (MEUR)       Q1   Q2   Q3   Q4 2008
Meteorology                 -0.2  3.3  1.9  3.0  8.0
Controlled Environment       2.7  2.8  1.9  1.0  8.4
Weather Critical Operations -0.2  6.3  7.3 11.2 24.6
Other                        0.7 -0.6 -1.9 -1.2 -3.0
Total                        3.1 11.7  9.2 14.0 38.0



Further information
Jouni Lintunen, CFO, p.+358 9 8949 2215 or +358 40 579 0181