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WebSocketWeather

WeatherFlow Tempest WebSocket API

WeatherFlow Tempest WebSocket API is a websocket from WeatherFlow Tempest (WeatherFlow-Tempest, Inc.) providing weather data. A real-time WebSocket stream of live observations from WeatherFlow's Tempest personal weather-station network. A Polymarket bot would use it to pull sub-minute ground-truth air temperature, precipitation, and wind from a physical station near a target city, providing a continuously-updating read on daily high/low temperature and rain that front-runs official daily-resolution weather markets.

At a glance

ProviderWeatherFlow Tempest (WeatherFlow-Tempest, Inc.)
TypeWebSocket
CategoryWeather
Real-timeYes — streaming
AuthAPI key
PricingFree API (personal access token at no cost); requires owning a ~$349 Tempest station for your own data — API access: Free — generate a Personal Access Token in the Tempest Web App (Settings → Data Authorizations) or use OAuth; no subscription fees, Hardware (optional, for your own station data): Tempest Weather Station ~$349 from shop.tempest.earth, Developers can explore the interactive docs and test without owning a station; production apps must serve data only to the station's owner

What data it provides

  • Air temperature (Air/Tempest observations)
  • Precipitation: rain accumulation and precip type, plus rain-start events
  • Wind: lull/average/gust speed and direction; rapid-wind messages every 3 seconds
  • Relative humidity and station/sea-level pressure
  • Lightning strike events with distance and energy
  • UV index, solar radiation, and illuminance (Sky/Tempest units)

Features

  • Realtime push: full Tempest observation reported roughly every minute; rapid-wind every 3 seconds when subscribed
  • Subscription model: open one socket, then listen_start/listen_stop and rapid_wind_start per device ID; idle connections dropped after 10 minutes
  • Coverage: any Tempest/Air/Sky station the token's owner has access to (hyperlocal single-station, not gridded)
  • Companion REST API (api.weatherflow.com / apidocs.tempestwx.com) for station metadata and latest/historical observations as a backstop
  • Also offers local UDP broadcast on the LAN as an offline backup feed
  • Token-based auth; OAuth 2.0 supported for production / multi-user apps

Links

Use it in a bot

Other weather data sources

Listed, not endorsed. Pricing and capabilities change without notice — check the provider's own documentation before you depend on anything here. Browse the full data resources directory or the strategy database.
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