How Weather or Not works
Tell us where you are and when your plans happen. We pull the official hourly forecast for your exact location from the National Weather Service — the same data every weather app uses, minus the clutter — and check it for anything that could wreck your plans: rain, snow, ice, thunderstorms, high winds, extreme heat, and bitter cold. Then we give you a straight answer instead of a wall of numbers.
What counts as plan-wrecking weather?
We flag rain or snow when the chance passes 40% during your window, any thunderstorm or winter storm conditions, sustained winds above 25 mph, heat at or above 95°F, cold at or below 20°F, and every active National Weather Service alert for your area — from severe thunderstorm warnings to winter storm watches.
Is Weather or Not free?
Completely. No account, no app to install, no limit on checks. Bookmark it and check every plan you make.
Why only US locations?
Our forecasts come directly from the National Weather Service, the US government's official forecasting agency. That keeps the data accurate, fast, and free — but it means we only cover the United States and its territories for now.