Ouranos : Weather Astronomy

Dive into the vastness of the night sky with Ouranos, your personalized astronomy companion, designed to help you arrange your stargazing observations with unparalleled precision.

* When can I stargaze?
* Is the weather favorable for observation tonight?
* Is the weather favorable for observation this week?
* What are the good conditions for stargazing?
* What can I observe tonight?


Our application offers you sharp weather forecasts, covering periods of 7 days, updated hourly. Simplify your planning and determine the ideal time for your observations with a quick read of optimal conditions.

The power of Ouranos lies in our sophisticated algorithm that identifies the best moments for observation, taking into account both weather and astronomical conditions. For even more detailed analysis, consult our Sky Quality Index chart.

Ouranos proves to be the ultimate assistant for both amateur and professional astronomers. It provides relevant and precise data, including:

• Cloud cover
• Seeing (a specific measure that accounts for atmospheric disturbances)
• Transparency
• Wind
• Humidity
• Moonrise and moonset times
• Planet rise and set times

The intuitive and user-friendly interface of Ouranos simplifies the organization of your stargazing evenings. Regardless of your location in the world, Ouranos offers you accurate astronomical weather forecasts, allowing you to anticipate and align your observations with the best possible conditions. Join Ouranos and take control of your nighttime sky explorations.