OpenWeatherMap

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Overview

OpenWeather provides global weather data through APIs, delivering current conditions, forecasts, historical archives, air quality, weather maps, and industry-specific datasets for any location worldwide.1235 It serves developers, enterprises, businesses, and researchers integrating weather intelligence into applications and workflows, using advanced meteorology, AI-enhanced models, and scalable infrastructure.157

Key Features

  • Current weather conditions - Real-time weather data for any global coordinate.
  • Forecasts - Minute-by-minute, hourly, daily, short-term, and extended weather forecasts.
  • Historical data - 47+ years of observations and historical forecast archives.
  • Weather maps - 15 layers including forecast, historical, and current conditions with 3-hour steps.
  • Air quality data - Current and forecasted air pollution metrics.
  • Government alerts - Severe weather alerts from official sources.
  • Industry APIs - Specialized APIs for solar, road risk, agromonitoring, and others.
  • One Call API 3.0 - Combines current, historical, forecast data, alerts, and summaries in one call.

Pricing

PlanPriceIncludes
FreeFreeBasic API access with limited calls after signup.
One Call API 3.0Paid (usage-based)Current, historical, forecasts, alerts, and summaries.
Subscription plansFrom affordable tiersHigher call limits, advanced datasets for enterprises.

Platforms & Requirements

OpenWeather operates as web-based APIs accessible via HTTP requests from any platform with internet connectivity, requiring only an API key obtained after free signup.17 No client-side applications or minimum hardware requirements apply; usage limits depend on subscription tier.

Integrations & Ecosystem

  • RESTful APIs for easy integration
  • JSON/XML response formats
  • Global coordinate-based queries
  • Weather maps and geospatial layers
  • Industry-specific APIs (e.g., solar, agriculture)
  • One Call API for unified data access
  • Historical and forecast archives
  • Air quality and alert feeds

Alternatives

AppDifference
WeatherAPISimilar global APIs but emphasizes simpler pricing for smaller developers.
Tomorrow.ioFocuses on hyperlocal forecasts and enterprise hardware sensors alongside APIs.
AccuWeather APIProprietary data with stronger emphasis on severe weather alerts and North American coverage.
Dark Sky (now Apple)Known for minute-level precipitation; API discontinued and integrated into Apple services.

Reputation

OpenWeather is recognized for reliable global coverage and developer-friendly APIs, widely used since 2014 for integrating weather data into apps and services.137 Strengths include extensive datasets like 47+ years of history and specialized APIs; some users note call limits on free tiers as a constraint.6 It maintains a professional reputation among developers and businesses for speed and scalability.5

Sources (9)
  1. https://openweathermap.org/appid
  2. https://openweathermap.org/api
  3. https://openweathermap.org/guide
  4. https://github.com/kshitizrohilla/weather-app-using-openweathermap-api/blob/main/README.md
  5. https://openweathermap.org
  6. https://openweathermap.org/faq
  7. https://openweathermap.org/register
  8. https://home.openweathermap.org
  9. https://www.youtube.com/watch?v=DWv7vHpULfc