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Open-Meteo

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FREE WEATHER API

Open-Meteo is an open-source weather API and offers free access for
non-commercial use. No API key required. Start using it now!

Features Documentation


ACCURATE WEATHER FORECASTS FOR ANY LOCATION

Open-Meteo partners with national weather services to bring you open data with
high resolution, ranging from 1 to 11 kilometers. Our powerful APIs
intelligently select the most suitable weather models for your specific
location, ensuring accurate and reliable forecasts.

With our user-friendly JSON API, accessing weather data has never been easier.
Whether you're developing an application or seeking weather information for
personal use, our APIs provide seamless integration and deliver the data you
need in a simple and accessible format.

Experience the precision and convenience of Open-Meteo's Forecast API, providing
comprehensive weather information worldwide. Stay informed and make informed
decisions with our reliable weather forecasts.

See features Read the docs
 * Forecast & Current
 * Last 10 days
 * Historical data

$ curl "https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41
&current=temperature_2m,wind_speed_10m
&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m"

{
  "current": {
    "time": "2022-01-01T15:00"
    "temperature_2m": 2.4,
    "wind_speed_10m": 11.9,
  },
  "hourly": {
    "time": ["2022-07-01T00:00","2022-07-01T01:00", ...]
    "wind_speed_10m": [3.16,3.02,3.3,3.14,3.2,2.95, ...],
    "temperature_2m": [13.7,13.3,12.8,12.3,11.8, ...],
    "relative_humidity_2m": [82,83,86,85,88,88,84,76, ...],
  }
}

$ curl "https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41
&past_days=10&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m"

{
  "hourly": {
    "time": ["2022-06-19T00:00","2022-06-19T01:00", ...]
    "wind_speed_10m": [3.16,3.02,3.3,3.14,3.2,2.95, ...],
    "temperature_2m": [13.7,13.3,12.8,12.3,11.8, ...],
    "relative_humidity_2m": [82,83,86,85,88,88,84,76, ...],
  }
}

$ curl "https://archive-api.open-meteo.com/v1/era5
?latitude=52.52&longitude=13.41&start_date=2021-01-01&end_date=2021-12-31
&hourly=temperature_2m"

{
  "hourly": {
    "time": ["2022-01-01T00:00","2022-01-01T01:00", ...]
    "temperature_2m": [1.7,1.3,1.8,1.3,1.8, ...],
  }
}


HIGH RESOLUTION

Open-Meteo leverages a powerful combination of global (11 km) and mesoscale (1
km) weather models from esteemed national weather services, providing
comprehensive forecasts with remarkable precision. No matter where you are in
the world, you can access the most reliable and accurate weather predictions
available.

Our weather data is presented in hourly resolution, allowing you to plan your
activities with confidence. The initial days of the forecast benefit from
localized weather models, offering highly detailed and accurate information.
Subsequently, global weather models provide forecasts for up to 16 days. Through
seamless integration, our APIs deliver a straightforward and reliable hourly
weather forecast experience.


RAPID UPDATES

At Open-Meteo, we understand the importance of having the most up-to-date
weather information. That's why our local weather models are updated every hour,
ensuring that our forecasts reflect the latest changes in conditions, including
updates from rain radars.

Our weather models rely on a wealth of real-time data, including measurements
from various sources such as airplanes, buoys, radar systems, and satellites. By
incorporating this diverse and comprehensive data, our numerical weather
predictions provide a deeper analysis than traditional weather stations,
resulting in more accurate forecasts.


80 YEARS HISTORICAL DATA

Explore the past with our comprehensive Historical Weather API. With over 80
years of hourly weather data available at a 10 kilometer resolution, you can
dive into the climate of any location. Behind the scenes, this extensive
dataset, comprising 50 TB of information, enables you to access temperature
records spanning eight decades in an instant.

Moreover, our 1 kilometer weather models continuously archive recent data,
ensuring that you can seamlessly retrieve the latest forecasts alongside
historical information from previous weeks. This functionality opens up
possibilities for training machine learning applications and gaining valuable
insights from the combination of present and past weather data. Discover the
power of our historical weather API and unlock a treasure trove of weather
information.


OPEN-SOURCE

We believe in the power of open-source software. That's why the entire codebase
of Open-Meteo is accessible on GitHub, released under the AGPLv3 licence. This
means you can explore, use, modify, and contribute to the code.

If you wish to take it a step further, we're here to support you in setting up
your own API instances. This allows you to have complete control and enjoy
practically unlimited API calls, making it ideal for demanding applications like
machine learning or large language models.

In addition, our data is licensed under Attribution 4.0 International (CC BY
4.0). This means you are free to share and adapt the data, even for commercial
purposes. We believe in fostering an open ecosystem that encourages
transparency, collaboration and innovation.


FREE API

Open-Meteo offers free access to its APIs for non-commercial use, making it
convenient for individuals and developers to explore and integrate weather data
into their projects. The best part is that no API key, registration, or credit
card is required to enjoy this service.

We trust our users to utilize the free API responsibly and kindly request
appropriate credit for the data used. While there are no strict access
restrictions, we encourage fair usage of the service. If you require commercial
usage or anticipate exceeding 10'000 API calls per day, we recommend considering
our API subscription for enhanced features and support.


EASY TO USE

We've designed our APIs to be incredibly user-friendly. They are based on the
widely adopted HTTP protocol and utilize the simplicity of JSON data format. All
you need to get started is a basic understanding of geographic coordinates,
making HTTP requests, and working with JSON data.

To assist you in seamlessly integrating our APIs into your projects, we provide
comprehensive documentation. It includes detailed explanations of all parameters
and their usage. Whether you're using Python, R, Julia, PHP, JavaScript, React,
Flutter, Java, or any other programming language, our APIs are designed to work
effortlessly with your application.


STAY UP TO DATE!

We're constantly evolving and expanding. We're dedicated to providing you with
the latest features, weather variables, and data sources. If you want to stay in
the loop and be the first to know about our exciting updates, we invite you to
subscribe to our blog or follow us on Twitter. By doing so, you'll never miss
out on the latest developments and enhancements in our services.

Subscribe to the Newsletter Available APIs

Open-Meteo

 * Features
 * Pricing
 * About us & Contact
 * License
 * Terms & Privacy

Weather APIs

 * Weather Forecast API
 * Historical Weather API
 * ECMWF API
 * GFS & HRRR Forecast API
 * MeteoFrance API
 * DWD ICON API
 * GEM API
 * JMA API
 * Met Norway API

Other APIs

 * Ensemble API
 * Climate Change API
 * Marine Weather API
 * Air Quality API
 * Geocoding API
 * Elevation API
 * Flood API

External

 * GitHub
 * Blog
 * Twitter
 * Mastodon
 * Service status and uptime

© 2022-2023 Copyright: Open-Meteo.com