GPS jamming in Czechia today

Last updated: 9 November 2026, 04:51 UTC

Czechia today: 8.2% of monitored areas are affected.

Nearby

Pages near Czechia: Eastern Europe, Austria, Slovakia, Poland, Germany, Slovenia.

Cities and airports

Latest data: flights on 8 November 2026. Source: GPSInterference.com.
Place	Share affected	Aircraft affected
Ostrava Leoš Janáček (OSR)	2.6%	66 of 2,540
Brno Tuřany (BRQ)	1.8%	88 of 4,992
Prague Václav Havel (PRG)	1.7%	104 of 6,024

Aircraft within 100 km of each city that reported low GPS accuracy. A row opens the live map over that city.

By altitude

Czechia: mostly low altitude, which points to local, low-power jammers. How this is read.

Aircraft observations by barometric altitude, latest update. Source: GPSInterference.com.
Altitude	Aircraft	Share affected
Below 5,000 ft	774	8.3%
5,000 to 15,000 ft	989	1.5%
15,000 to 30,000 ft	2,037	0.8%
Above 30,000 ft	9,982	1.0%

Czechia: an aircraft is counted in each layer it crosses, so the rows do not add up.

Background

In 2024 the Czech Ministry of Transport briefed the interdepartmental navigation commission on GNSS interference and on what its occurrence reporting system shows about it (Ministry of Transport, 2024). A state-funded project at the Czech Technical University developed a method for air navigation providers to detect jamming from the parameters of aircraft ADS-B messages (Czech Technical University, 2024). For the reporting on interference in Czechia, and who it is attributed to, see Eastern Europe.

Nouzové situace GNSS (“GNSS emergencies”, in Czech), from GNSS Centrum CZ. Watch on YouTube.

Only hexagons whose centre lies inside the borders of Czechia are counted, so hexagons in neighbouring countries and out at sea are left out. The map is framed on 48.5° N to 51.1° N and 12° E to 18.9° E.

Czechia is counted under Eastern Europe.

Worst and best days on record

The worst day on record for Czechia was 7 March 2026, when 63.3% of its monitored areas were affected (31 of 49).
The best day on record for Czechia was 31 October 2026, when 2.0% of its monitored areas were affected (1 of 49).

Embed this map

Paste this where the Czechia map should appear. It is free to use and updates by itself.

<iframe src="https://gpsinterference.com/embed?region=czechia&amp;names=on" width="640" height="400"
        style="border:0;width:100%;max-width:960px" loading="lazy"
        title="Live GPS interference map: Czechia"></iframe>
<p>Live map: <a href="https://gpsinterference.com/">GPS Interference</a></p>

Open the embed studio to choose the map style, altitude, height and place names, and see a preview.

Czechia: low reported accuracy points to interference but does not prove it, and the map cannot locate a transmitter or say who is responsible. How the map is made.

This page records reported GNSS interference events from publicly available sources. It makes no claim about the source, intent or attribution of any event. Place names and boundaries follow the underlying data provider and do not imply any position on sovereignty or territorial status.