Xasteria: Astronomy Weather

Xasteria: Astronomy Weather

Astro Forecast - 7Timer

59 ratings
89 reviews
Free

Details

  • Released
  • Updated
  • October 28, 2015
  • April 28, 2026

Features

Xasteria: Astronomy Weather screenshot #1 for iPhone
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Xasteria: Astronomy Weather screenshot #9 for iPhone
Xasteria: Astronomy Weather screenshot #10 for iPhone
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About

Access detailed astronomical weather forecasts worldwide, including cloud cover, seeing, and transparency. Integrates with popular weather resources and shows satellite and ISS passes for your location. Offers multiple visualization modes for data.

Worldwide astro weather forecast
Clear Sky Charts integration
ISS and satellite pass tracking
Sun/Moon rise/set times
Moon phase data
Cloud cover and seeing forecasts
Multiple data visualization modes
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What's New in Xasteria

5.0

April 28, 2026

• Improved design and layout. Landscape mode for iPhone. • Aurora forecast in an extensive new tool. • New weather forecast source: MET Norway (MET.no). • Left panel of weather view can switch to icons (see settings). • Sun & Moon altitude arcs showing rising and setting. • Summary icons and cloud layers for 7timer (see settings). • ISS / Satellites now includes a configurable Brightest Satellites tab. • Light pollution map now uses lightpollutionmap.app. • Expanded in-app Help. Remember, the app never nags you with popups, so it gets very few ratings/reviews. Support it by rating it!

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User reviews

App update doesn’t scale on iPhone

Love the app. Latest 5.0 release doesn’t scale when viewed vertically on the iPhone. Annoying to rotate horizontally, sometimes requiring 2 hands. I miss the +/- buttons on previous version. The developers are amazingly responsive and have already contacted me for more info on my experience.

Response from developer

Hi. The old version had +/- buttons to shrink vertically and allow the bottom table to show more locations. The new version has a button that pops up the recent locations so it can use the whole vertical height for the forecast. So, I am not sure why you would miss the +/- buttons, but I would be interested to hear your reasoning if you use the contact page at astro.ecuadors.net or even directly to ecuador_gr at hotmail.com, especially how would you want the space used if the view could shrink like before and what you mean about requiring 2 hands. Thanks.

Ich weiß es nicht?

Diese App teste ich jetzt!

Resourceful

It definitely is a plus that user can get to other weather sites. Like to have the Bortle scale right on the main page too.
Oct17,24 after update,meteoblue defaulted to Greek every time even iOS system changed makes no difference

Now Xasteria is going into thin air. You see less but smell more adv.
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Awesome!

Thank you, very helpful, this app I’d like to create myself some time ago

App rarely updates on iPhone

Love the app. But the data seems to never update. Neither does the website. The data is important and strategic to my hobby. When it works, that is, which is not often.

Developer apps

FAQ

What does Xasteria do?

Xasteria provides detailed astronomical weather forecasts for stargazers worldwide. It offers data on cloud cover, atmospheric seeing, transparency, temperature, wind, and more, based on the 7Timer service. It also integrates with other popular weather resources and shows celestial events like ISS passes.

What are the key features of Xasteria?

Key features include worldwide astro weather forecasts, Sun/Moon rise/set times, moon phase data, cloud cover and seeing predictions, and integration with services like Clear Sky Charts and Windy. It also displays ISS and bright satellite passes for your location and offers multiple data visualization modes.

Is Xasteria free to use?

The core functionality of Xasteria is available for free and is ad-free. For users who wish to support the app and the 7Timer service, there is an optional 'Xasteria Plus' purchase that unlocks access to non-free weather sources and additional features like night vision mode and a lunar calendar.

What kind of weather data does Xasteria provide for astronomy?

Xasteria provides specific astronomical weather data including cloud cover, astronomical seeing, atmospheric transparency, temperature, humidity, rain/snow probability, atmospheric instability, and wind conditions. This data is crucial for planning successful stargazing and astrophotography sessions.

Who would benefit from using Xasteria?

Xasteria is designed for anyone interested in observing the night sky. This includes amateur astronomers, professional astronomers, astrophotographers, and casual stargazers who want to know the best conditions for viewing celestial objects and events.