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REST APIWeather

Visual Crossing Timeline Weather API

Visual Crossing Timeline Weather API is a rest api from Visual Crossing providing weather data. A single-endpoint REST weather API that returns historical observations, current conditions, and forecasts together in one timeline call for any global location. For Polymarket weather markets (e.g. "NYC high temp"), it lets a bot pull live forecasts plus 50+ years of station history to backtest and price temperature/precipitation edges.

At a glance

ProviderVisual Crossing
TypeREST API
CategoryWeather
Real-timeNo — request/response
AuthAPI key
PricingFree tier (1,000 records/day); pay-as-you-go metered at ~$0.0001/record plus monthly subscription plans — Free: 1,000 records/day, attribution required, Metered (pay-as-you-go): ~$0.0001/record, unlimited records/month, up to 25,000 records/query, Professional: 10,000,000 records/month, 10,000 records/query, 100 locations/query (subscription, price via cost calculator), Corporate / Enterprise: unlimited records (fair-use), higher concurrency, custom pricing

What data it provides

  • Daily and hourly air temperature (high/low/mean) — drives NYC/city high-temp markets
  • Precipitation amount, probability, and type (rain/snow)
  • Wind speed/direction, humidity, dew point, cloud cover, solar radiation
  • Current conditions / live observations from ground stations
  • Up to 15-day forecasts (hourly and daily)
  • 50+ years of historical hourly and daily records, plus weather normals/climate stats

Features

  • Single Timeline call returns past + current + forecast for one location/date range
  • ~100 weather elements; select via elements/include params; JSON, flatJSON, or CSV output
  • Global coverage from 100,000+ stations, satellites, and radar; query by address, ZIP, city, or lat/lon
  • 50+ years history depth and up to 15-day forecast horizon
  • Free tier 1,000 records/day; flat metered rate (~$0.0001/record) with no overage cliff
  • Query Builder and AI Code Builder for generating ready-to-use request code

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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