The next ninety minutes, for your block.
Most forecasts are for your city, and sound surer than they are. Ninety Sky watches the radar every two minutes, weighs NOAA's models, and shows you how sure it is, then checks its own work.
Ninety minutes, and how sure we are, in one glance.
Rain likely by 3:40, heaviest around 4.
Height is the chance. Above the top line, rain is likely. Between the lines, possible. Below, just a chance.
Colour is how hard. Greens are a drizzle to a steady rain, yellows and oranges a soaking, reds a downpour.
You decide. Most apps give you one number. This shows you the doubt, so you can make the call on the walk yourself.
Four things, every few minutes.
- Look
We watch the radar every two minutes.
The whole country, two kilometres at a time, then we measure which way the rain is moving and slide it forward.
- Ask
We ask the models, and a judge.
NOAA's HRRR sketches the shape of the rain; the National Weather Service fills in the hours. Jev, a decision model, weighs them against the radar.
- Show
We show you the doubt.
The ribbon for the next ninety minutes, then the hours, then three and seven days, each with its chance of rain.
- Check
We grade ourselves.
Every forecast is scored against what really fell. A change ships only when it beats the one before.
A tap on the shoulder before it rains.
When rain is about half an hour out, when it starts, and when it's done. Never more than one of each every half hour, and nothing between ten at night and seven in the morning.
Built to be honest about the weather.
Your block, not your city.
Two-kilometre radar and an eight-kilometre forecast cell around where you're standing.
It shows its doubt.
A 40% chance looks like a 40% chance, not a raincloud icon.
It checks its work.
Every forecast is graded against what fell, and the recipe only changes when it gets better.
It leaves you alone.
No accounts, no ads, no tracking. Your location is used for your forecast and nothing else.
The short answers.
Is it free?
Yes, while we're in beta. Later, longer-range forecasts and rain alerts may become part of an optional subscription; the ninety-minute forecast is staying free. We'll say clearly what's changing before anything does.
Where does it work?
The contiguous United States, where NOAA's radar mosaic and models reach.
What happens to my location?
The app sends your coordinates to build your forecast, only while it's open. Nothing is sold or shared for advertising. The privacy policy has every detail.
Can I use it for storm warnings?
No. It's for the umbrella, not for safety. For warnings, follow the National Weather Service and your local authorities.
How do I reach you?
Send feedback from the bottom of the app or the website, or email hello@ninetysky.com. We read every note.