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WebSocketWeather

Xweather Weather API — Real-Time Pushed Data (Webhooks/Streaming)

Xweather Weather API — Real-Time Pushed Data (Webhooks/Streaming) is a websocket from Vaisala Xweather providing weather data. Xweather's Weather API delivers enterprise-grade weather data (observations, alerts, forecasts, lightning) and supports real-time server-push delivery: instead of polling, Xweather POSTs data to your endpoint with minimal latency the moment an event fires. A Polymarket bot can use it to react instantly to temperature observation changes and new/updated severe-weather alerts driving "NYC high temp" and weather markets.

At a glance

ProviderVaisala Xweather
TypeWebSocket
CategoryWeather
Real-timeYes — streaming
AuthAPI key
PricingCustom/quote-based (paid); free 30-day API trial, no credit card — Free API trial: 30 days, no credit card required, full Weather API access for evaluation, Custom paid plans: quote-based, scaled by deployment size, data complexity, reliability/SLA, and scope (contact sales), Real-time pushed-data/webhooks: premium add-on requiring a sales conversation beyond standard subscription

What data it provides

  • Current observations from METAR/airport + personal weather stations (global)
  • Temperature, dew point, heat index, wind chill, feels-like (C and F)
  • Precipitation amount, snow depth, humidity, MSLP/station pressure
  • Wind speed/direction/gusts, visibility, cloud cover, ceiling
  • Government weather alerts (NWS, Environment Canada, MeteoAlarm, UK Met Office) — watches/warnings/advisories
  • Forecasts, severe weather, lightning, air quality, fire, maritime, road weather

Features

  • Real-time server-push delivery (webhooks/HTTP POST) with minimal delay vs polling — triggers on new/updated/canceled alerts
  • Observation update cadence 1–60+ min by station (METAR ~hourly + special reports; PWS more frequent)
  • Global station coverage plus exclusive Xweather datasets (hail, road weather, lightning)
  • SDKs/toolkits for JavaScript, Python, iOS, Android; plus an MCP server for AI/LLM agents
  • RESTful API with batch requests, documented rate limiting, multiple output formats
  • Enterprise reliability with SLA options on paid plans

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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