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Xasteria: Astronomy Weather

Price: Free

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Rating: 4.8 (31 Ratings)

App Name: Xasteria: Astronomy Weather

App Category: Weather



App Description

Xasteria brings the Astronomical-oriented ASTRO weather forecast of the service 7Timer! to your iOS device. You can use your device GPS for a forecast of your location, or enter manual coordinates.

ISS passes and Iridium flares for your location are also shown (data from

Quick access to astro weather web sources like Clear Outside and Meteoblue, as well as to the latest water vapor satellite images is also provided.

7Timer! is mainly derived from the NOAA/NCEP-based numeric weather model, the Global Forecast System (GFS) and gives you a forecast for the entire globe with a resolution of about 20km at 3-hour intervals.

The data provided includes:

  • Sun/Moon rise/set & twilight times.
  • Moon phase.
  • Cloud cover.
  • Astronomical seeing.
  • Atmospheric transparency.
  • Temperature.
  • Humidity.
  • Rain/Snow.
  • Atmospheric instability.
  • Wind.

Xasteria provides you with a choice of 3 visualization modes for the data: the new 7Timer! ASTRO graphics, the color-stripe graphics similar to some other astro-forecast services and a raw text mode.

Xasteria is available in English, Greek and French. If you would like to translate it to your own language, please contact the author.

A special version of Xasteria is included in the Polar Scope Align Pro app, taking advantage of that app’s night vision mode and location manager.

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