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WebSocketWeather

Tomorrow.io Weather API + Webhooks

Tomorrow.io Weather API + Webhooks is a websocket from Tomorrow.io providing weather data. Tomorrow.io is a hyperlocal weather intelligence platform whose Weather API serves real-time conditions, minute-by-minute and multi-day forecasts, and historical data across 60+ weather layers. Its Alerts/Events API plus webhooks push HTTP POST notifications the instant a monitored location crosses a user-defined threshold (e.g. temperature above X), letting a Polymarket weather bot react to "NYC high temp"–style markets without polling.

At a glance

ProviderTomorrow.io
TypeWebSocket
CategoryWeather
Real-timeYes — streaming
AuthAPI key
PricingFree tier (500 calls/day); paid API & Enterprise plans by call-volume (custom, contact sales) — Free: 500 calls/day (also 25/hour, 3/second), core fields (temp, wind, precip, humidity), 5-day forecast, 1 weather-based alert; API-only (no platform UI), API Plan: paid, priced by API call volume/usage tiers for direct integration into apps and workflows, Enterprise: custom — 14-day forecasts, minutely resolution, full 60+ layers, customizable alerts, contact sales

What data it provides

  • Temperature (current + forecast high/low), feels-like, humidity, dew point
  • Precipitation amount, intensity, probability and precipitation type
  • Wind speed/gust/direction; cloud cover; pressure
  • Minutely, hourly, and daily timesteps; forecasts up to 14 days out
  • Historical/archive weather data going back ~20+ years
  • 60+ data layers incl. air quality, pollen, solar, soil, fire, flood, lightning, maritime

Features

  • Webhooks: HTTP POST push to your server when a monitored location/threshold alert fires (event-driven, no polling)
  • Alerts/Events API: define custom rules over 80+ data points (e.g. temp > X) and get forecasted events or threshold crossings over the next ~5 days
  • Hyperlocal point-based forecasts; 99.9% advertised uptime
  • Free-tier rate limits: 500 req/day, 25 req/hour, 3 req/second
  • JSON REST responses; client snippets for Python, JavaScript/Node, Java, Go, R, Shell
  • Coverage: global, with historical depth ~20 years and forecasts to 14 days (enterprise)

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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