Live air traffic, seen the way a controller sees it.
Traffic, airspace, weather and GNSS interference over the Baltic and the rest of the world, in one free view. No ads, no account, nothing to install. Built by Ampron in Estonia.
Not for navigation or operational decisions.
Three views a controller would recognise
Honest by design
An aviation tool is only useful if you can trust what it leaves out. sky shows missing data as missing, never as zero. Estimates are labelled as estimates. Coverage limits are stated, because coverage depends on community receivers and is thin in places. And sky does not guess at causes or intent: it shows what aircraft broadcast and what that adds up to.
Missing is shown as missing. Estimates say so.
The Baltic GNSS picture, every day
On 17 October 2026, 770 of the 1 399 aircraft sky recorded over the Baltic lost satellite positioning for a while: at least 312 hours in all.
Aircraft find their position by satellite. Around the Baltic those signals are often disrupted, and crews fall back on their other navigation systems. sky reads it from what each aircraft broadcasts about the accuracy of its own position, and publishes a daily map: where it happened, how many aircraft, for how long, and, on days when the data allows, the likely source areas. It does it per flight too, for example: "GNSS lost for 9 min over the Gulf of Finland".
To quote it: "Ampron sky, Baltic GNSS today, sky.ampron.eu/gnss.html", with the date of the figure. The archive goes back to 16 September 2026.
Everything else, free
Weather
Rain radar from European and Nordic national radars, lightning, a two-hour rain nowcast, decoded METAR and TAF, SIGMETs and winds aloft.
Rare arrivals
What unusual aircraft lands at an airport in the next hour.
Volume
The airspace in 3D, with curtains for where aircraft have been.
Situations
Airport and airspace closures and drone NOTAMs from official sources in fourteen European countries, plus holding and diversions.
Alerts
Free push alerts: one aircraft anywhere, military activity, traffic near a place you choose.
Follow my flight
A link for the family that works on any phone. No app, no account.
Aircraft finder
Type "C-17" and follow every match worldwide.
Replay and archive
Over a month of Baltic traffic, recorded and replayable, since 16 September 2026.
Sky dome
Point your phone up and see what's overhead.
For airports and air navigation
sky's Tower and Analytics views show the measures airport operators work with: approach times, runway occupancy, go-arounds, arrival spacing and noise screening, all from ADS-B. Capacity studies run on the recorded archive.
sky is the public side of what Ampron does for aviation. We build display and data systems for airside operations: apron information displays at Tallinn Airport since 2016 and its de-icing pad displays since 2018, and Finavia has contracted us for the mobile information display system at Rovaniemi Airport.
In your pocket
sky runs in the phone's browser and installs from there like an app. Share a flight with the family as a link: they see where it is and when it should land, without signing up for anything.
Where the data comes from
sky shows estimates from public data. Not for navigation or operational decisions. Coverage depends on community receivers and varies by area.
- Traffic adsb.lol (ODbL) and The OpenSky Network
- Airspace openAIP
- Base map © OpenStreetMap contributors, OpenFreeMap / OpenMapTiles
- Weather NOAA Aviation Weather Center, MET Norway, EUMETNET OPERA, FMI, DMI, the Estonian Environment Agency (Keskkonnaagentuur), SMHI, ECMWF
- NOTAMs national air navigation service providers (full list on sky's Sources page)
Screenshots on this page are real captures of sky. Images captured 18 October 2026 while The OpenSky Network supplied the traffic.