iOS · iPadOS · watchOS
Weather,told straight.
Nimbus draws the sky you’re actually standing under — sun above the horizon, ground below it — and puts the forecast on the ground, where it’s easy to read.
The idea
Sun above.Ground below.Numbers whereyou read them.
Most weather apps are a table with a photo behind it. Nimbus is a horizon: the light lives above the line and the forecast below it, so you take in both at a glance.
iPhone · Cape Town, before dawn
The moon, still up at 05:55.
Drawn as a lit sphere in its true phase, sitting on the horizon right where you’d see it. Below the line: the sky trend and the best hour to head out.
iPhone · Sydney, after midnight
Night, clear to the horizon.
Stars above the line, the forecast below it. Drag through the day and the reading follows you: 00:25, clear, 14°, 0% chance of rain.
iPhone · Honolulu, rain
Heavy rain, flagged before it lands.
An alert sits at the top of the forecast and the sky trend fills in hour by hour, so you know when to go and when to wait it out.
iPhone · Locations
Every city, one tap away.
Save the places you care about, each with its own live conditions. The sheet slides up over the sky, so you never lose your place.
iPhone Duo
Two screens. One sky.
Open it and the horizon runs straight across the fold, with your cities on one side and the forecast on the other. Closed, the outer screen runs the full app on its own.
Apple Watch
Bigger, because you only get a glance.
The watch isn’t a smaller phone. Type, corners and surfaces all get bigger, because you read it at arm’s length, often in sunlight, often on the move. Only the margins shrink.
- The same readings as iPhone — value, unit and track, two up, on the same colour ramps.
- A horizon whenever there’s a sun or moon to draw — and when there isn’t, the colour of the screen tells you the conditions.
- Today, the week ahead and your favourites, plus complications that put the sky on your watch face.
iPad
Room for the whole sky.
On iPad, your saved cities sit in a sidebar beside the sky, one tap apart. Hide the sidebar and the forecast fills the screen.
The system underneath
Every sky Nimbus drawsis designed by hand.
Not a filter over a stock photo. Each one has its own sky, ground, horizon, glow and sun or moon, and Nimbus shows the one that matches the weather outside.
Hand-built skies: six for the time of day, four overcast, eight for cloud, rain, snow and storm.
Colour stops on the temperature scale, from −60° to +50°.
Design tokens shared by the app, its widgets and this website.
All eighteen
Dawn through storm, day and night.
Temperature scale
Eleven colour stops from −60° to +50° that shift in hue rather than brightness, so every reading stays legible on all eighteen skies.
Real sun and moon
Lit like real spheres, not stickers. The moon shows its true phase, with craters that ghost through the shadow.
Rain alerts
Heavy rain flagged before it arrives, with the chance hour by hour. Follow the next hour on the Lock Screen and in the Dynamic Island.
Widgets and Live Activities
Home Screen and Lock Screen widgets, the Dynamic Island, and a Live Activity that counts down to sunrise or sunset.
Advice for the day
A plain-English note on what the day calls for, plus your best hour to be outside. Worked out privately, on your device.
Air quality and averages
Air quality on iPhone, iPad, Apple Watch and in widgets, plus how today compares with the seasonal average.
No ads, no tracking
Free to use, with Premium if you want more. No account needed. Your location is rounded to about a kilometre before it leaves your device, and it’s never sold or shared.
Free download · Nimbus Premium from $2.99/month
Look up,then look at Nimbus.
Available for iPhone, iPhone Duo, iPad and Apple Watch. Requires iOS 26, iPadOS 26 or watchOS 26, or later.