The easiest, most advanced, weather API on the web

The same API that powers Forecast.io and Dark Sky for iOS can provide accurate short­term and long­term weather predictions to your business, application, or crazy idea.

We’re developers too, and we like playing with new APIs, so we want you to be able to try ours hassle-free: all you need is an email address.

The API uses a simple, JSON interface. Community-provided API wrappers
enable you to integrate with just a couple lines of code!

Our simple pricing policy:

You can use the API in both commercial and non-commercial applications.

  1. The first thousand API calls you make every day are free, period.
  2. Every API call after that costs $1 per 10,000 (that is, 0.01¢).
  3. Credit us with a “Powered by Forecast” badge that links to http://forecast.io/ wherever you display data from the API.
Dark Sky for iOS