Build With the World's Best Weather API
Clean REST & GraphQL APIs, SDKs in 7 languages,
interactive playground, and 18ms median latency. From
sign-up to first call in under 5 minutes.
Everything You Need to Build Fast
From first API call to production deployment — our developer ecosystem is built to
get out of your way.
SDKs & Libraries
Official SDKs for Python, JavaScript/TypeScript, Go, Ruby, Java, Swift, and Rust. All open-source on GitHub with full test coverage.
Interactive Docs
Beautiful API reference with inline try-it-now code runner, auto-generated samples in every language, and versioned changelogs.
GraphQL API
Query only the fields you need with our GraphQL endpoint — great for mobile apps where bandwidth matters. Introspection
enabled.
Webhooks & Streams
Subscribe to weather events — severe alerts, threshold crossings, daily forecast updates — delivered as real-time server-sent events or
webhooks.
Simple, Predictable API Design
RESTful endpoints with consistent response shapes, ISO 8601 timestamps, and
human-readable error messages.
/v3/current
🌡️
Current Conditions
Live observations: temperature, humidity, wind, sky cover, pressure, visibility.
/v3/forecast/hourly
📡
Hourly Forecast
Hour-by-hour predictions up to 240 hours. Includes precipitation probability and type.
/v3/alerts/subscribe
⛈️
Alert Webhooks
Subscribe a URL to receive severe weather alerts when thresholds are crossed.
📋 Full API Reference
⬇️ Download OpenAPI Spec
📦 Postman Collection
Try the API Without Writing Code
Configure your request visually, run it against live data, and copy the generated
code snippet in your language of choice.
Switching Is Easier Than You Think
Our migration guides map every endpoint, field name, and response format from
your current provider. Most teams switch in under a day.
OpenWeatherMap
Limited historical depth, inconsistent QC, frequent outages
- 99.99% SLA + 40yr archive
Tomorrow.io
High cost at scale, limited marine/aviation coverage
- Transparent volume pricing + marine
The Weather Company
Complex enterprise contracts, slow data refresh
- Simple API-first + 1-min refresh
Migration in 3 Steps
Get Your Key
Sign up free. Your API key is ready in seconds — no credit card, no sales call.
Map Endpoints
Use our migration guide to match your existing calls to CustomWeather endpoints. Most map 1-to-1.
Run in Parallel
Shadow-run both APIs for one week, compare outputs, then flip the switch. Zero downtime.