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Bright Sky

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Overview

Bright Sky is a free JSON API that provides access to weather data from Germany's Deutscher Wetterdienst (DWD) open data program. It offers endpoints for weather observations, forecasts, radar imagery, precipitation probabilities, solar radiation, and weather alerts without requiring an API key.137

Key Features

  • Weather Observations - Retrieves historical and current weather data from DWD station network using lat, lon, and date parameters.
  • Weather Forecasts - Provides DWD weather forecasts for specified locations and dates.
  • Weather Radar - Delivers live weather radar imagery data.
  • Precipitation Probabilities - Returns probability forecasts for precipitation.
  • Solar Radiation - Supplies solar radiation measurements and forecasts.
  • Weather Alerts - Accesses current weather warnings and alerts from DWD.
  • Current Weather - Fetches real-time current weather conditions via dedicated endpoint.

Pricing

PlanPriceIncludes
FreeFreeUnlimited access to all API endpoints; subject to DWD terms of use.

Platforms & Requirements

Bright Sky operates as a web-based API service accessible via HTTP requests from any platform with internet connectivity. A public instance is available at api.brightsky.dev; self-hosting is possible using Docker Compose with PostgreSQL and Redis. No client-side applications or minimum hardware requirements beyond standard web access.

Integrations & Ecosystem

  • DWD Open Data Server
  • PostgreSQL database
  • Redis caching
  • Docker deployment
  • Python parsing package

Alternatives

AppDifference
OpenWeatherMap APICommercial API with global coverage and additional features like air pollution data, requires API key.
DWD Open Data directlyOfficial source without JSON formatting or simplified querying; requires parsing raw files.
MeteoSource APIPaid service with high-resolution global forecasts, not limited to Germany.
WeatherAPI.comFreemium API with worldwide data including historical records, mandates registration.

Reputation

Bright Sky is recognized as a reliable, no-cost gateway to DWD weather data, valued for its simplicity and open-source nature among developers needing German meteorological information.13 It receives positive feedback for ease of use without API keys and comprehensive coverage of DWD datasets.7 Some users note it's focused exclusively on DWD/Germany data, limiting global applicability.3

Sources (10)
  1. https://brightsky.dev
  2. https://brightsky.dev/demo/
  3. https://github.com/jdemaeyer/brightsky
  4. https://play.google.com/store/apps/details?id=com.newtonmobile.hestia
  5. https://apps.apple.com/us/app/bright-sky-us/id1667028531
  6. https://www.areyouok.org.nz/get-support/bright-sky/
  7. https://brightsky.dev/docs/
  8. https://wcspittsburgh.org/bright-sky/
  9. https://www.hestia.org/brightsky
  10. https://us.bright-sky.org