A real-time atmospheric analysis tool that tells you how likely aircraft contrails are to form — and persist — at any location on Earth.
Powered by ECMWF weather models, live ADS-B flight data, and upper-troposphere atmospheric science.
The percentage
What does the number mean?
The contrail probability tells you how likely it is that a passing aircraft will leave a visible, persistent contrail — not just a brief flash.
LOWUnder 20% — contrails will evaporate in seconds
MED20–40% — short-lived trails possible
HIGH40–70% — persistent trails likely
VERY HIGH70%+ — long spreading contrails expected
Step 1
Search a location
Type any city, airport, or address in the search bar — or tap anywhere on the satellite map to drop a pin.
Then press ANALYZE to run the atmospheric analysis for that location.
Step 2
Scrub the 4-day timeline
After analyzing, drag the slider at the bottom to move through a 4-day hourly forecast. The colour bar shows contrail risk at a glance — green is low, red is very high.
The map and all readings update in real-time as you scrub.
Live data
Live aircraft overlay
Blue aircraft are at cruise altitude (FL280–FL400) — the contrail zone. Light icons are below cruise altitude.
Tap any aircraft to see its callsign, altitude, speed, heading, and whether it is likely leaving a contrail right now.
You're ready
Start exploring
Search any location and pick an hour to see real atmospheric conditions. Look up before a flight, plan a spotting session, or just explore the sky over any city on Earth.
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