Free tool
Flight-day weather at both airports.
Type the airport you leave from and the one you land at. You get the current conditions, the next 12 hours and any active National Weather Service alerts for each, straight from the NWS. US airports, no sign-up, nothing stored.
What this checks, and what it doesn’t
It checks the weather. For each airport it reads the latest observation from the airport’s own NWS weather station, the NWS hourly forecast for the airport’s location, and any NWS alerts in force there. Hours with thunderstorms, snow, freezing rain, fog or wind of 30 mph or more are highlighted, because those are the conditions that most often slow an airport down.
It doesn’t check flight delays. Whether the FAA has a ground stop or ground delay program at an airport is published on the FAA’s National Airspace System status page, and your airline decides whether your own flight is late. Good weather at both ends does not mean a flight is on time.
Data: US National Weather Service (api.weather.gov), public domain. Forecasts can be wrong; check with your airline before you leave for the airport.
Why check both airports
A sunny morning at home tells you nothing about a thunderstorm line sitting over the airport you’re flying into. When an arrival airport can’t take as many flights, the FAA can hold flights bound for it on the ground at their departure airports, so weather a thousand miles away can keep you at your gate.
That’s the gap Viltri was built for. In the app you enter a trip once and every flight leg shows both airports’ METAR weather report and any FAA ground stop or ground delay program in force, from five days before departure. For flights leaving today or tomorrow it can notify you when an FAA delay program affects either airport. Those are Viltri Premium features; the forecast, radar and alerts for where you are are free.
Related
Every leg of your trip, checked for you.
Free on iPhone. No account. Trips are Premium, with a 7-day free trial.
Download on the App Store