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Screenshots

  • Cobalt Weather screenshot 1
  • Cobalt Weather screenshot 2
  • Cobalt Weather screenshot 3
  • Cobalt Weather screenshot 4

About Cobalt Weather

Cobalt is a fast, uncluttered weather app that takes its color from the conditions and puts your own backyard readings right next to the forecast. Open it on a clear afternoon and it is warm and bright. Open it in a thunderstorm and the whole interface shifts. Every screen, chart, and detail sheet is colored by the weather it is describing, in both light and dark mode. FORECASTS • Hour-by-hour and 10-day forecasts, with separate daytime and overnight conditions for every day • Minute-by-minute rain for the next hour where available, so you know when it starts and when it stops • Interactive charts for precipitation, temperature, wind, and atmosphere • Feels like, humidity, dew point, UV index, visibility, cloud cover, pressure, and air quality • Sunrise, sunset, daylight remaining, moonrise, moonset, and moon phase • Tap any day or any hour for a full detail sheet, colored by that day's own forecast SEVERE WEATHER • Official watches, warnings, and advisories, pinned above the forecast • Color-coded by severity, with the exact window each one covers YOUR OWN STATION • Connect an Ambient Weather, Ecowitt, Davis, or Tempest station in a couple of minutes • Live temperature, humidity, wind speed, gusts, direction, rain, and pressure • Rain totals by rate, day, week, month, year, and current event • Station screens take their color from your own sensors, not the regional forecast MADE TO BE YOURS • Save your places and your station, and switch between them with a tap • Jump to your current location instantly • Hide any reading or card you don't need on the forecast page • A forecast widget on your home screen that stays current without opening the app • Pick your own units • Follow your system theme or lock it to light or dark COBALT PLUS Cobalt is free, with no account and no sign-in. Cobalt Plus is an optional subscription that adds: • Alerts on your phone: severe weather at up to three saved places, rain about to start, a daily briefing, and limits you set on your own station's readings • History: chart any reading from one saved place and up to two stations over the last day, week, month, or year • Your station compared with the forecast, reading by reading, and how the forecast has changed since yesterday • Up to 10 saved places and as many stations as you like (Free includes 2 places and 1 station) • Every extra sensor your station has, from extra temperature and humidity channels to soil, leaf, air quality, lightning, and leak sensors, each one renamable, like Kitchen or Garden • Station widgets and a full forecast widget, refreshed every 30 minutes PRIVACY Cobalt has no accounts and no sign-in. Your station credentials are stored in your device's Keychain and are sent only to fetch your own readings. Location is used only to show you the weather where you are. SOMETHING WRONG? Cobalt is made by one person, and I would genuinely rather hear about a problem than have you put up with it. Tell me what happened and what phone you're on: [email protected]. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

What’s new

Version 1.2.1 · Updated October 6, 2026

• New tips show how to add a place and what holding a place or sensor does • Sensor history charts use your units and can switch readings • Alerts stop for places and stations you removed

App privacy

The developer, Nicholas Saulino, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction
  • Diagnostics: Crash Data
  • Identifiers: Device ID

Used for: Analytics, App Functionality

Alternatives to Cobalt Weather

Looking for apps like Cobalt Weather? Here are 6 similar apps on the App Store. The highest rated is SunnySky Weather (5.0/5), and 5 of the 6 are free to download.

Cobalt Weather vs. alternatives
App Rating Price Last updated Compare
Cobalt Weather – Free October 6, 2026
Perun Weather – Free Oct 10, 2026 Compare
SunnySky Weather 5.0 / 5 (3) Free Oct 4, 2026 Compare
WeatherTracking: PWS – Free Sep 16, 2026 Compare
ShadePilot – Free Aug 19, 2026 Compare
WAETTA: Weather Radar – Free Oct 5, 2026 Compare
My ClimateIQ – 2.99 USD Oct 5, 2026 Compare

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