KRK.FLIGHTS / EPKK
Where the weather forecast comes from
Choose an arrival or departure time. We combine Kraków Airport observations and forecasts to show visibility, clouds, wind and weather that could affect flying.
Where does the timeline data come from?
- Airport observation
Shows what is happening at Kraków Airport now. Recent observations reveal whether visibility is improving and the air is becoming more humid. This report is called a METAR.
- Airport forecast
A forecaster prepares this forecast specifically for the airport. It is the timeline’s main source when it is current and covers your time. We also preserve its possible weather changes. The report is called a TAF.
- Forecast for the airport area
Fills hours without an available airport forecast. Open-Meteo supplies weather-model predictions for Kraków Airport’s coordinates. These models represent a wider area and do not provide runway visibility or cloud base in our data. We show these gaps explicitly.
What affects the assessment?
- Visibility
- Fog and poor visibility can make approaches harder. When available, runway visibility is shown separately: it differs from general visibility.
- Low clouds
- We consider the base of a cloud layer covering most of the sky. A few low clouds do not imply the same restriction.
- Wind
- Direction relative to the runway matters, not just speed. We consider crosswind, gusts and changing direction. Strong wind along the runway can receive a different assessment from wind blowing across it.
- Thunderstorms and winter weather
- Thunderstorms or freezing precipitation can slow or interrupt handling. Snow and deicing can increase waiting times. A weather code alone does not establish that the airport is closed.
How should I read possible changes?
The filled band shows the prevailing forecast. A dashed outline marks possible worse conditions. Select a time to see them separately, so the main forecast and an additional scenario stay distinct.
A 40% chance of fog describes the weather, not a 40% chance of cancellation. When a forecast only describes temporary or gradual changes, we do not invent a percentage.
What about our fog model?
We separately test a model trained on historical Kraków Airport observations. It predicts very poor visibility two hours after the latest reading. Its output does not yet change timeline assessments or notifications. See how we train and test it →
Thresholds and terms explained
The timeline’s four levels come from weather-assessment rules, not percentage probabilities of delay. Default runway visibility (RVR) advisory bands are 550 m for arrivals and 300 m for departures; the arrival cloud-base band is 200 ft, about 61 m. Thresholds are configurable and are not aircraft or crew-specific minima.
TEMPO means temporary changes, BECMG a gradual transition during a stated interval, and FM new conditions from a stated time. During a gradual transition we retain the earlier weather and show the possible later conditions. BKN/OVC layers or vertical visibility define a ceiling; FEW/SCT do not.
An observation older than 90 minutes cannot produce a current assessment. The airport forecast must cover the selected time and be no more than 12 hours old. The active runway direction, surface condition and a flight’s equipment and qualifications are unknown. Missing data remain missing; your airline provides flight status.