OpenWeatherMap

About OpenWeatherMap

OpenWeatherMap (operated by OpenWeather, a London-based weather intelligence company) provides weather data APIs covering current conditions, forecasts, historical archives, air quality, maps, and industry-specific use cases. Data is sourced from global and local weather models, satellites, radars, and a network of weather stations, and is delivered in JSON, XML, HTML, or CSV formats depending on the product.

The API family includes current weather, hourly forecasts (4 days), daily forecasts (16 days), a 5-day/3-hour forecast, a 30-day climatic forecast, and a One Call API that combines real-time conditions, minute-by-minute and 15-minute precipitation forecasts, hourly and daily timelines (47+ years of historical data plus forecasts up to 1.5 years ahead), and national weather alerts from agencies such as NOAA and EUMETNET. Specialized offerings include a Road Risk API for route-based weather and alerts, solar irradiance and solar panel energy prediction APIs, historical weather and forecast bulk data files, and a statistical weather API for long-term parameter averages by day or month.

Some products are available on free and paid plans, while others (hourly forecast, climatic forecast, bulk data, statistical weather API, accumulated parameters) require Developer, Professional, or Expert subscription tiers, and select historical and solar datasets are sold through a separate marketplace. The Road Risk API requires contacting the company for a quote. The service targets developers and businesses building applications, dashboards, analytics, and enterprise systems that require weather intelligence, including agriculture and energy-related use cases.

Key features

• Real-time current weather data (temperature, humidity, wind, pressure, clouds) for any location
• One Call API 4.0 combining current, minute/hourly/daily forecasts, and alerts in one timeline-based endpoint
• 16-day daily and 5-day/3-hour forecast data
• 47+ years of historical weather archives dating back to 1979
• Solar irradiance and solar panel energy prediction APIs
• National weather alerts sourced from official agencies like NOAA and EUMETNET

Frequently asked questions