GPS jamming in the United States today

Last updated: 5 November 2026, 10:18 UTC

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Background

The FAA publishes flight advisories for GPS interference tests run by the US military. A March 2025 notice for White Sands Missile Range, New Mexico, warned that GPS, WAAS and ADS-B might be unavailable within 328 nautical miles of the test site at high altitude (FAA, March 2025). AvWeb, citing IEEE Spectrum, reported in 2021 that controllers had complained about such tests in the Southwest, some saying they had been told not to ask for the jamming to stop (AvWeb, October 2021). In June 2026 AIN reported that the NTSB's preliminary report on a King Air air ambulance crash near Ruidoso, New Mexico, which killed all four people aboard, found the military had scheduled GPS jamming across the area the flight would cross. The NTSB has not determined a cause (AIN, June 2026).

Not all interference is military. In October 2022 GPS anomalies around Dallas–Fort Worth made a runway unusable, and researchers writing in Inside GNSS in 2023 said the source had still not been found (Inside GNSS, September 2023). NBAA said in March 2026 that unreliable GNSS near Denver International Airport in 2022 was traced to an unauthorised transmitter (NBAA, March 2026). In 2013 the FCC proposed a fine against a New Jersey driver whose jammer, used to block his employer's vehicle tracker, interfered with testing of a satellite landing system at Newark airport (FCC, August 2013). For the reporting on interference in United States, and who it is attributed to, see: Americas.

Only hexagons whose centre lies inside the United States's borders are counted, so hexagons in neighbouring countries and out at sea are left out. The map is framed on 24.4 to 49.4 and -125 to -66.9.

Most affected areas

Place	Share affected	Aircraft affected
Los Angeles	55.2%	958 of 1,734
Chicago	39.6%	545 of 1,375
Western United States	38.5%	5 of 13
Western United States	35.9%	167 of 465
San Diego	33.4%	237 of 709

The United States: with few aircraft, one report can give a hexagon a high share; see the limitations.

By altitude

The United States: Mostly low altitude: points to local, low-power jammers. How this is read.

Aircraft observations by barometric altitude, latest update
Altitude	Aircraft	Share affected
Below 5,000 ft	112,089	10.7%
5,000 to 15,000 ft	158,720	2.1%
15,000 to 30,000 ft	227,522	0.2%
Above 30,000 ft	578,310	0.1%

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

Nearby

Pages near the United States: Americas, Canada, Mexico, Cuba, Venezuela.

Regions. Methodology.

The United States. 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.