Ouranos: Stargazing Forecast

Ouranos: Stargazing Forecast

Plan your best nights

54 ratings
20 reviews
Free
In-App Purchases

Details

Released
August 2, 2023
Updated
November 12, 2026

Features

Ouranos: Stargazing Forecast screenshot #1 for iPhone
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Ouranos: Stargazing Forecast screenshot #8 for iPhone
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About

Plan your celestial observations with detailed weather forecasts and astronomical data. Discover optimal viewing times, track celestial events, and find dark-sky locations. Connect with a community of stargazers and share your astrophotography.

✓Starry sky weather forecasts
✓Celestial object tracking
✓Astronomy event calendar
✓Light pollution map
✓Astrophotography gallery
✓AI-powered stargazing tips
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+2

What's New in Ouranos

20261112.0.0

November 12, 2026

- Optimization bug fixes

18

Subscriptions & In-App Purchases

Ouranos Premium Monthly

Access to all features

$4.991 Month
7 Days trial
Price Updates
November 13, 2026→$4.99
November 12, 2026→$3.99
October 20, 2026→$2.99
September 30, 2026→$4.99
July 8, 2026→$4.99
April 16, 2026→$5.99
November 26, 2025→$4.99
October 17, 2025→$4.99
September 9, 2025→$6.99
July 31, 2025→$4.99
March 30, 2025→$2.99
March 24, 2025→$1.99
March 17, 2025→$2.99
March 4, 2025→$1.99
How to cancel Ouranos subscription ⁉️

User reviews

My favourite astronomy weather app

Really well designed weather app and my favourite for checking observation possibilities. Paul responds quickly if there is a need. Very much recommended.

MERCI ✨

C’est spécifiquement ce que je recherchais

Excellent but one major flaw

This is a genuinely impressive astronomy weather app with enormous potential. The observing data, weather information and overall concept are excellent, and it is already one of the most capable astronomy planning tools I have used.

There are, however, a few things that stop it feeling like a polished premium application. The logo feels rather amateur for such a sophisticated piece of software, and although I appreciate the reference to Ouranos, the name is not especially memorable or immediately meaningful.

My main concern is the forecast itself. On my app which is the premium version, the weather forecast does not begin until around twelve hours in the future. As an astronomer, one of the most important questions is simply whether it is worth going outside this evening or in the next few hours. I have tried changing forecast models and other settings, but the behaviour remains the same, so it does not appear to be a configuration issue. If this is a bug, I hope it can be fixed. If it is by design, I would strongly encourage the addition of an immediate forecast view, as this would make the app considerably more useful.

Despite these criticisms, I am impressed. The foundations are excellent, and this feels like an application with a very bright future. I look forward to seeing how it develops.
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Widget problem

Widget doesn’t allow west, negative, longitudes.

One of the Best Weather Apps for Astronomy

Ouranos is one of the best ways to plan your night under the stars. I’ve been using this app for over six months and have appreciated my communications with its developer. Paul does a great job with this app and updates it often!

Michael,
Late Night Astronomy

Response from developer

Thanks you so much !

Developer apps

FAQ

What is Ouranos?

Ouranos is an astronomy and stargazing companion app that provides high-precision weather forecasts, detailed astronomical data, and community features to help users plan their night sky observations.

What kind of weather forecasts does Ouranos offer?

Ouranos provides weather data optimized for stargazing, including cloud cover, seeing, transparency, wind, humidity, dew point, hour-by-hour visibility conditions, and a Sky Quality Index updated every 15 minutes. It offers a 14-day forecast.

What astronomical tools are available in Ouranos?

The app includes planet, Moon, and star rise/set times, deep-sky object visibility, interactive charts for observation planning, and information on over 500 yearly astronomy events like meteor showers and eclipses.

Can I find good stargazing locations with Ouranos?

Yes, Ouranos features a global light pollution map with Bortle scale data, helping you find the best observation spots near you, ideal for astrophotography trips and telescope sessions.

Does Ouranos have ads?

No, Ouranos does not contain advertisements. The app is free to download and use, with optional premium subscription plans available for enhanced features.

What are the subscription options for Ouranos?

Ouranos offers two subscription plans: Ouranos Premium Monthly at $3.99 per month and Ouranos Premium Yearly at $39.99 per year. Both plans include a 7-day free trial.

How often is Ouranos updated?

The latest version of Ouranos was released on November 9, 2026. Updates are typically frequent, ensuring the app remains current with astronomical data and features.

What is the age rating for Ouranos?

Ouranos has an age rating of 4+, making it suitable for users of all ages interested in astronomy and stargazing.