Going Blue
Weather forecasts by satellite
About
This weather app provides detailed forecasts via satellite messengers, ideal for remote expeditions. It compresses extensive weather data into single messages, accessible through SMS, Garmin inReach, or iPhone satellite messaging.
What's New in Going Blue
1.3.0
September 7, 2026
- Added the ICON model from DWD. - Added a model agreement score that shows how well the forecast agrees with forecasts from NOAA, ECCC, ECMWF, and DWD. - Added a model comparison mode. To use it, pull forecasts for the same location from multiple models. A comparison switch will appear below the meteogram. - Improved meteogram rendering performance so that switching between forecasts feels instant. - Added humidity variables: dewpoint, relative humidity, and feels-like temperature. - Expanded detailed cloud cover from 8 to 10 levels, adding 250 and 200 hPa for high peaks.
MoreFAQ
How does Going Blue get weather data?
Going Blue uses a custom compression codec to pack hundreds of forecast data points into a single message. This message can then be sent over SMS, Garmin inReach, or iPhone satellite messaging for you to decode within the app.
What kind of weather information does Going Blue provide?
Going Blue includes temperature, snow, rain, wind, and cloud cover by default. Optional variables for advanced users include pressure-level winds, AQI, and freezing level.
How many weather models does Going Blue use?
Going Blue utilizes forecasts from over 30 models, including HRRR, HRDPS, ICON-D2, and MET Norway. It automatically selects the best model for your specific location.
Can I compare different weather forecasts with Going Blue?
Yes, Going Blue allows you to compare forecasts from American, Canadian, and European centers. All forecasts are saved on your device for easy comparison of multiple models and past data.
What devices does Going Blue support?
Going Blue is currently supported on iPhone devices. It is designed to work seamlessly with satellite messaging capabilities on these devices.
How often is Going Blue updated?
The latest version of Going Blue is 1.1.0, which was last updated on August 20, 2026. Updates typically focus on improving forecast accuracy and expanding model support.
Is Going Blue suitable for high-altitude mountaineering?
Yes, Going Blue offers optional variables like pressure-level winds, which are crucial for high-altitude mountaineering. This allows for detailed planning in challenging environments.
Does Going Blue have ads?
No, Going Blue does not contain advertisements. The app is completely free and ad-free, focusing solely on providing essential weather data.