Xasteria: Astronomy Weather

Xasteria: Astronomy Weather

Astro Forecast - 7Timer

59 ratings
93 reviews
Free

Details

  • Released
  • Updated
  • October 28, 2015
  • September 29, 2026

Features

Xasteria: Astronomy Weather screenshot #1 for iPhone
Xasteria: Astronomy Weather screenshot #2 for iPhone
Xasteria: Astronomy Weather screenshot #3 for iPhone
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Xasteria: Astronomy Weather screenshot #5 for iPhone
Xasteria: Astronomy Weather screenshot #6 for iPhone
Xasteria: Astronomy Weather screenshot #7 for iPhone
Xasteria: Astronomy Weather screenshot #8 for iPhone
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 users say

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+1

What's New in Xasteria

5.2

September 29, 2026

• Redesigned Light Pollution tool with an interactive map using World Atlas 2015 or Xasteria/VIIRS 2025 data. Pan, zoom and tap any location for sky brightness and approximate Bortle estimates. Includes road and satellite backgrounds, adjustable opacity, night colours and an expandable information panel. • New Multi forecast combines 7Timer astronomy data with the optimal short-term forecast from MET.no or Apple Weather, then blends both sources beyond a configurable crossover time for a longer, steadier forecast. Tap marked disagreements to compare the original data. • Redesigned settings screens, with integrated help. • New ISS Live Feed lets you watch NASA’s live video stream from the International Space Station. • A vertical line on Sun and Moon altitude charts now indicates the current time. • New coordinate units setting: DMS or decimal. • Fixed Himawari and Eutelsat links • Various help, localisation and visual fixes. A quick rating or review on the App Store is always appreciated. For suggestions or feedback: http://astro.ecuadors.net

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User reviews

Superb

Great for planning observation sessions and option to set manual locations makes it great if planning to travel to dark sky locations

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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Response from developer

Hopefully version 5 fixes the issues for you.

Awesome!

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

Developer apps

User experience

🐞

Reported Bugs

10 issues

App update doesn’t scale on iPhone

Bug

App rarely updates on iPhone

Bug

Crashes constantly

Bug

meteoblue defaulted to Greek every time after update

Bug

Xasteria is going into thin air

Bug

Widget issue

Bug

App stopped working completely

Bug

No longer updates

Bug

Does not seem to display correct info on cloud cover for Perth in Western Australia

Bug

Low clouds aren’t shown on main screen

Bug
✨

Requested Features

8 requests

Bortle scale on main page

Feature

Widget integration

Feature

Watch complication

Feature

Notifications for good viewing conditions

Feature

Landscape mode support

Feature

Map for location input

Feature

Add Meteoblue's astronomical data support

Feature

Option to remove unwanted locations

Feature

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.