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GPS / GNSS interference — Persian Gulf & Strait of Hormuz

GNSS interference over the Persian Gulf and the Strait of Hormuz affects both shipping and aviation in one of the busiest corridors in the region.

Last 24 hours: High · data up to · updated hourly

8.8%of area-hours with interference in the last 24 h (2,753 observed)
143of 377 areas affected in the last 7 days (24 severe)
94%highest share of affected aircraft in one area (7 days)
177aircraft with spoofing indications in the last 7 days (231 events)

Affected areas — last 7 days

Share of aircraft with degraded GNSS:2–5.0%5–10.0%10–20.0%20–35.0%35–50.0%50%+

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Daily trend — last 30 days

Share of observed area-hours in which a notable share of aircraft reported degraded GNSS (≥ 2% of aircraft; dark part ≥ 10%).

0%15%30%2026-10-04: 3.3% of 3,344 area-hours affected (48 severe)2026-10-05: 2.9% of 3,247 area-hours affected (32 severe)Mon 5 Oct2026-10-06: 6.7% of 3,170 area-hours affected (98 severe)2026-10-07: 10% of 3,195 area-hours affected (203 severe)2026-10-08: 3.9% of 3,142 area-hours affected (54 severe)2026-10-09: 13% of 2,927 area-hours affected (287 severe)2026-10-10: 7.4% of 3,200 area-hours affected (115 severe)2026-10-11: 9.8% of 3,020 area-hours affected (161 severe)2026-10-12: 6.4% of 2,919 area-hours affected (88 severe)Mon 12 Oct2026-10-13: 6.9% of 2,920 area-hours affected (136 severe)2026-10-14: 4.2% of 3,145 area-hours affected (56 severe)2026-10-15: 3.8% of 3,058 area-hours affected (53 severe)2026-10-16: 22% of 2,635 area-hours affected (417 severe)2026-10-17: 8.3% of 2,685 area-hours affected (153 severe)2026-10-18: 11% of 3,155 area-hours affected (226 severe)2026-10-19: 11% of 2,807 area-hours affected (195 severe)Mon 19 Oct2026-10-20: 9.8% of 2,970 area-hours affected (191 severe)2026-10-21: 11% of 3,010 area-hours affected (230 severe)2026-10-22: 11% of 3,025 area-hours affected (198 severe)2026-10-23: 21% of 2,537 area-hours affected (407 severe)2026-10-24: 20% of 2,611 area-hours affected (404 severe)2026-10-25: 14% of 3,116 area-hours affected (313 severe)2026-10-26: 9.4% of 3,243 area-hours affected (155 severe)Mon 26 Oct2026-10-27: 10% of 3,256 area-hours affected (219 severe)2026-10-28: 6.4% of 3,206 area-hours affected (119 severe)2026-10-29: 3.6% of 3,361 area-hours affected (67 severe)2026-10-30: 13% of 3,250 area-hours affected (257 severe)2026-10-31: 12% of 3,075 area-hours affected (289 severe)2026-11-01: 7.8% of 2,768 area-hours affected (153 severe)2026-11-02: 10% of 1,384 area-hours affected (81 severe)Mon 2 Nov

Most affected day in this period: Fri 16 Oct (22% of area-hours severely affected).

Day (UTC)Area-hoursAffectedSevereAircraft-hours
Mon 2 Nov1,384139 (10%)8126,280
Sun 1 Nov2,768217 (7.8%)15358,861
Sat 31 Oct3,075381 (12%)28956,199
Fri 30 Oct3,250420 (13%)25760,415
Thu 29 Oct3,361121 (3.6%)6761,973
Wed 28 Oct3,206205 (6.4%)11960,226
Tue 27 Oct3,256339 (10%)21958,741

How to read these figures

The region is divided into hexagonal areas of about 1,770 km². For every hour, the monitor checks which share of the aircraft in each area reported degraded GNSS integrity (NIC) via ADS-B. An area-hour counts as affected when that share exceeds the threshold and enough aircraft were present. Spoofing indications are impossible position jumps and large GNSS/barometric altitude differences. These are heuristic indicators — see how the map works for details and limitations.

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