# Xasteria: Astronomy Weather — Astro Forecast - 7Timer

> Global astronomical weather forecast and stargazing tools. (iPhone/iPad app by Dimitrios Kechagias.)

- Source: https://appshunter.io/ios/app/xasteria-astronomy-weather/id985030722 (this page in markdown: same URL + `.md`)
- Developer: [Dimitrios Kechagias](https://appshunter.io/developer/970157964)
- Category: Weather, Utilities
- Price: Free
- Rating: 4.70/5 from 59 App Store ratings · 93 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 7 MB
- Languages: American English, French (France), German (Germany), Greek, European Spanish
- Released: 2015-10-28
- Data updated: 2026-09-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/xasteria-astronomy-weather/id985030722/reviews.md

## What is Xasteria?

Xasteria helps you decide if tonight is worth observing. It brings together astronomical weather forecasts, sky conditions and observing tools in one ad-free app, built around the 7Timer ASTRO forecast.

Configurable forecast sources:
• 7Timer / GFS, worldwide coverage, ~20km resolution:
   · Cloud cover (with layer breakdown)
   · Astronomical seeing
   · Atmospheric transparency
   · Temperature and humidity
   · Rain / snow
   · Atmospheric instability
   · Wind speed and direction
• MET Norway, based on the ECMWF model, particularly useful in regions with significant terrain variation

Sun/moon details:
• Sun / Moon rise, set and twilight times.
• Moon phase and elevation.

Tools:
• Aurora forecast, with worldwide and local data/maps.
• ISS and satellite passes for your location.
• Light pollution report and map for your observing site.
• Quick access to Clear Outside, Meteoblue, Windy, Astrospheric, Sat24, water vapor satellite imagery and more.

Display
Three display modes: 7Timer icon/graphic view, color-stripe view, or raw text. The left panel can be switched to icons, and summary icons and cloud layers are configurable in settings.

This app will always be ad-free, with no in-app popups asking for reviews. If you would like to support it and the 7Timer service, Xasteria Plus adds an Apple Watch app, Home Screen widgets, OpenWeather real-time forecasts, Apple Weather, night vision mode, lunar calendar, solar eclipse tools and more.

A quick rating or review on the App Store is always appreciated. For suggestions or feedback:
http://astro.ecuadors.net

## Key features

- 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

## What do users think of Xasteria?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 🌟 Accurate forecasts
- 🔭 Great for astronomy
- 💰 Free and useful
- 💡 Integrates multiple sources
- ✨ Clean interface
- 🚀 Responsive developers
- 🎯 Helpful for planning

**Cons**

- 🐛 Scaling issues on iPhone
- 🐛 App rarely updates
- 🐛 Crashes constantly
- 🐛 Default language issues
- 🐛 Visual accessibility concerns
- 🐛 Inaccurate for some locations

**Commonly reported bugs**

- App update doesn’t scale on iPhone
- App rarely updates on iPhone
- Crashes constantly
- meteoblue defaulted to Greek every time after update
- Xasteria is going into thin air
- Widget issue
- App stopped working completely
- No longer updates
- Does not seem to display correct info on cloud cover for Perth in Western Australia
- Low clouds aren’t shown on main screen

**Most requested features**

- Bortle scale on main page
- Widget integration
- Watch complication
- Notifications for good viewing conditions
- Landscape mode support
- Map for location input
- Add Meteoblue's astronomical data support
- Option to remove unwanted locations

## Recent user reviews (10 of 93)

All indexed reviews: https://appshunter.io/ios/app/xasteria-astronomy-weather/id985030722/reviews.md

### 5/5 — Superb

*2026-08-06*

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

### 4/5 — App update doesn’t scale on iPhone

*2026-05-05*

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.

**Developer response:** 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.

### 5/5 — Ich weiß es nicht?

*2026-03-18*

Diese App teste ich jetzt!

### 3/5 — Resourceful

*2026-02-18*

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.

**Developer response:** Hopefully version 5 fixes the issues for you.

### 5/5 — Awesome!

*2026-01-28*

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

### 2/5 — App rarely updates on iPhone

*2025-06-16, version 4.9*

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.

### 5/5 — Beautiful app

*2025-03-18*

pearl handle to use!!!! One of my favorite!

### 5/5 — Great app

*2025-03-14*

Use regularly for weather predictions for stargazing and imaging

### 5/5 — Pachmayr

*2025-02-06*

pearl

### 5/5 — Great App!

*2025-01-05*

All the info needed and easy to use, no complaints here.

## Frequently asked questions about Xasteria

### 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.

## Version history (last 5 releases)

### 5.1 — 2026-08-05

• New light pollution data option: an extrapolated World Atlas based on VIIRS 2025 satellite night-light data.
• Satellite orbits are now calculated on board, with dedicated Tiangong and Hubble views.
• Spanish localization.
• New combined recent locations and location search icon.
• Further fixes, UI tweaks and expanded Help.
Remember, the app never nags you with popups, so it gets very few ratings/reviews. Support it by rating it!

### 5.0 — 2026-04-28

• 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!

### 4.9 — 2024-06-10

Please support the app by rating or reviewing! You will never get any annoying in-app popups asking you to do so.
Here's what's new:
- Light Pollution Map added as an extra button under "Other" sources (some new users had trouble finding it) and fixed light pollution source data selection.
- Increased contrast blue text in weather view and other tweaks.
- German language fixes.

### 4.8 — 2024-04-11

Please support the app by rating or reviewing! You will never get any annoying in-app popups asking you to do so.
Here's what's new:
- German translation added (by Uwe Spaniol).
- French & Greek translation improvements.
- Sat24.com updates.
- Clear Sky Charts locations update.

### 4.7 — 2024-03-22

Please support the app by rating or reviewing! You will never get any annoying in-app popups asking you to do so.
Here's what's new:
- The solar eclipse type and time of maximum will be displayed in place of the moon phase for days where an eclipse will be visible from your location.
- Apply/Tab buttons added to keyboard when editing coordinates.

## Apps similar to Xasteria

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Deluxe Moon Pro • App & Widget](https://appshunter.io/ios/app/deluxe-moon-pro-app-and-widget/id482361332) | 4.7 (7,348) | Free | Weather |
| [Astrospheric](https://appshunter.io/ios/app/astrospheric/id1166046863) | 4.8 (453) | Free | Weather |
| [Ouranos Pro: Astro Companion](https://appshunter.io/ios/app/ouranos-pro-astro-companion/id6453292305) | 4.8 (5) | $29.99 | Weather |
| [Astroweather - astronomy tools](https://appshunter.io/ios/app/astroweather-astronomy-tools/id1257346912) | 3.3 (9) | Free | Weather |
| [Good To Stargaze](https://appshunter.io/ios/app/good-to-stargaze/id1298891559) | 4.4 (217) | Free | Weather |
| [Scope Nights Astronomy Weather](https://appshunter.io/ios/app/scope-nights-astronomy-weather/id540120977) | 4.5 (770) | $6.99 | Weather |

## More apps by Dimitrios Kechagias

- [Polar Scope Align](https://appshunter.io/ios/app/polar-scope-align/id970157965)
- [Polar Scope Align Pro](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373)
- [Polar Scope Align Pro Watch](https://appshunter.io/ios/app/polar-scope-align-pro-watch/id986082042)
- [Bubble Level + Compass Pro](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222)
- [Xasteria Plus - Astro Weather](https://appshunter.io/ios/app/xasteria-plus-astro-weather/id1053736323)

All apps by Dimitrios Kechagias: https://appshunter.io/developer/970157964

## Related topics

[dimitrios kechagias](https://appshunter.io/ios/topics/dimitrios-kechagias) · [xasteria](https://appshunter.io/ios/topics/xasteria) · [atmosphere sky](https://appshunter.io/ios/topics/atmosphere-sky) · [scope nights astronomy weather](https://appshunter.io/ios/topics/scope-nights-astronomy-weather) · [clear outside](https://appshunter.io/ios/topics/clear-outside) · [astronomy weather](https://appshunter.io/ios/topics/astronomy-weather) · [scope nights](https://appshunter.io/ios/topics/scope-nights) · [cloud cover](https://appshunter.io/ios/topics/cloud-cover)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*