iOS · watchOS · iPadOS
Weather,told straight.
Nimbus draws the sky you are actually standing under — sun above a horizon, ground below it — and puts the forecast on the ground where you can read it.
The idea
Sun above.Ground below.Numbers whereyou read them.
Most weather apps are a table with a photograph behind it. Nimbus is a horizon: the light lives above the rule and the forecast lives below it, so you can read both at a glance.
iPhone · Cape Town, before dawn
The moon, still up at 05:55.
Drawn as a lit sphere in tonight’s real phase, sitting on the horizon where you’d see it. Below the rule, the sky trend and the best hour to head out.
iPhone · Sydney, after midnight
Night, clear to the horizon.
Stars above the rule, the forecast below it. Drag through the day and the reading follows: 00:25, clear, 14°, no 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 with rain, hour by hour, so you know when to go and when to wait.
iPhone · Locations
Every city, one swipe away.
Save every place you care about. Each carries its own live conditions, and the sheet pulls up over the sky without leaving it.
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 is the full Nimbus on its own.
Apple Watch
Bigger, because you have one second.
The watch is not a smaller phone. Type, radii and surfaces all go up, because it’s read 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 when there’s a sun or moon to draw, and when there isn’t, the screen’s own colour carries 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, so switching between them is one tap. Hide the sidebar and the forecast takes the full width.
The system underneath
Every sky Nimbus can drawis an authored state.
Not a filter over a photograph. Each one carries its own sky, ground, horizon, glow and sun or moon, and the app shows exactly one at a time.
Authored sky states — six times of day, four overcast, eight conditions.
Anchors on the temperature scale, from −60° to +50°.
Design tokens shared by the app, the widgets and this page.
All eighteen
Dawn through storm, day and night.
Temperature scale
Eleven anchors from −60° to +50°, diverging by hue rather than lightness, so a reading stays legible at a glance on any of those eighteen skies.
Real sun and moon
A lit sphere, not a sticker: true phase, a projected terminator, craters that ghost through it.
Rain alerts
Heavy rain flagged before it arrives, with the chance hour by hour. Track 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-language note on what the day calls for, and your best hour to be outside. Worked out on your device.
Air quality and averages
AQI on iPhone, iPad, Watch and widgets, and how today compares with the seasonal normal.
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.