
Ceiling Forecast
Track the lowest forecast broken cloud layer, using the 5/8 (62.5%) sky-cover threshold, and see where ceilings may cross key aviation categories.

Hourly aviation forecast guidance
Animate forecast ceiling, surface visibility, and combined VFR, MVFR, IFR, or LIFR conditions for the United States and every state.
Open United States ForecastThis aviation ceiling and visibility forecast helps pilots, skydiving operators, and weather-sensitive flight teams follow changing conditions hour by hour. Compare forecast cloud ceilings, forecast visibility, or the combined flight rule category on national and state maps. Smooth color-filled contours make broader weather trends easy to recognize while unshaded locations remain unclassified.

Track the lowest forecast broken cloud layer, using the 5/8 (62.5%) sky-cover threshold, and see where ceilings may cross key aviation categories.

Follow forecast surface visibility and identify areas approaching MVFR, IFR, or LIFR visibility thresholds.

View the more restrictive result of ceiling and visibility, with VFR drawn first and progressively lower categories layered above it.
Move through consecutive forecast hours, switch among ceiling, visibility, and flight-category layers without losing your place, zoom for additional city labels, and click the map for forecast details.
Planning note: These maps provide forecast guidance and are not a substitute for official aviation weather briefings, observations, forecasts, advisories, or operational decision-making requirements.