# Kai Öistämö

> Kai Öistämö is president and CEO at Vaisala. Xweather Weather API on Anchor Terminal, with grades, an about and public profiles.

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- Markdown: https://www.anchorterminal.com/people/kai-oistamo/index.md (~700 tokens)
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- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

President and CEO, Vaisala.

## What Kai builds

- [Xweather Weather API](https://www.anchorterminal.com/tools/xweather.md), graded B, 67.2/100, in Weather & climate data. Xweather Weather API from Vaisala returns current conditions, forecasts to 15 days, history from 2004, official alerts, lightning, hail, air quality, maritime and road weather. Agents reach it as a REST API or a hosted MCP server. President and CEO, Vaisala, researched 2026-10-28.

## Works with

- [Brandon Clark](https://www.anchorterminal.com/people/brandon-clark/), Product Manager, API and Maps
- [Samuli Hänninen](https://www.anchorterminal.com/people/samuli-hanninen/), Executive Vice President, Xweather Business Area
- [Vilho Väisälä](https://www.anchorterminal.com/people/vilho-vaisala/), Founder, Vaisala

## Questions

### Who is Kai Öistämö?

Kai Öistämö is president and CEO at Vaisala.

### What does Vaisala Oyj make?

Anchor Terminal lists Xweather Weather API from Vaisala Oyj. Xweather Weather API from Vaisala returns current conditions, forecasts to 15 days, history from 2004, official alerts, lightning, hail, air quality, maritime and road weather. Agents reach it as a REST API or a hosted MCP server.

### How are Kai's tools graded?

Xweather Weather API is graded B, 67.2 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.linkedin.com/in/bkclark/details/experience/
- https://www.linkedin.com/in/bkclark
- https://www.xweather.com
- https://x.com/vaisalaxweather
- https://www.xweather.com/support
- https://www.xweather.com/contact
- https://en.wikipedia.org/wiki/Vaisala

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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