The Dark Sky API integrates weather predictions into applications via JSON & REST protocol. API methods are available for Current conditions. Minute-by-minute forecasts out to 1 hour. Hour-by-hour forecasts out to 48 hours and Day-by-day forecasts out to 7 days. The Dark Sky API allows you to look up the current or historical weather anywhere on the globe. The forecasts are available in multiple languages. First 1,000 API calls are available at no cost, following with a fee of $0.0001 for each call after.