Read the data

Latest window

GET https://api.gpsinterference.com/v1/interference/latest

GET https://api.gpsinterference.com/interference.json is the same document, which the map uses. It holds one UTC day of flights, history_date, and is rebuilt once a day at about 05:00 UTC.

One UTC day

GET https://api.gpsinterference.com/v1/interference/YYYY-MM-DD

The map as it stood at that UTC day's last update (not a count of only that date's flights), with the same fields as the latest summary plus archive_date and complete. complete is false while the day is still today and may be replaced; a finished day never changes. A date with no saved map returns 404 and {"error":"no archive"}.

GET https://api.gpsinterference.com/v1/interference/days lists every saved day: date, updated and hexes (a count), without polygons.

Hexagon fields

Cells are flat-topped hexagons on the Web Mercator grid with a 0.34° longitude radius (about 38 km centre to corner at the equator, 22 km at 54°N). Cells with fewer than 3 aircraft are left out.

bands (summaries from November 2026 on) splits the same counts by barometric altitude: edges_ft is [5000, 15000, 30000] and hexes holds four lists, for below 5,000 ft, 5,000–15,000 ft, 15,000–30,000 ft and above 30,000 ft. Each entry is { h, g, b }, with the polygon and share taken from the hexagon of the same h in the main list (p = 100 × b ÷ (g + b), the same cut-offs for c). A band leaves out cells with fewer than 3 aircraft in that band. An aircraft that changes band inside a cell is counted in each, so the four bands do not add up to the main counts; aircraft on the ground or with no altitude are only in the main counts.

Top-level fields: history_date is the UTC day the flights were on; updated is when the summary was written (UTC); grid is mercator-r0.34; window_minutes is 1440, one day; sources is adsb.lol-globe-history plus the adsb.lol release it was built from, such as adsb.lol-prod-0. Summaries saved before November 2026 may lack history_date and carry polled_points, grid_points and failed_points from the old live collection.

Caching, CORS and limits

The latest summary, today's saved day and the date index are sent with cache-control: public, max-age=60. A finished day is sent with max-age=86400.

Browser CORS is allowed only for https://gpsinterference.com and https://www.gpsinterference.com, so another website cannot read the JSON from its visitors' browsers; curl and server-side requests are unaffected. There is no fixed rate limit, but very frequent requests may be throttled. The data changes once a day, so follow the cache headers rather than polling.

Attribution

Aircraft data from adsb.lol globe history, shared under the Open Database License (ODbL). Cite https://gpsinterference.com. Low reported accuracy is not confirmed jamming and does not identify a source. Basemap tiles are separate and are not part of this API.

Citing the data

Cite the saved day you used: the latest map changes every day, but a saved day does not.

APA

GPSInterference.com. (2026). GPS interference hexagon data [Data set]. https://gpsinterference.com/docs

One saved day:

GPSInterference.com. (2026). GPS interference hexagon data, 25 October 2026 [Data set]. https://api.gpsinterference.com/v1/interference/2026-10-25

BibTeX

@dataset{gpsinterference_2026,
  author       = {{GPSInterference.com}},
  title        = {GPS Interference Hexagon Data},
  year         = {2026},
  publisher    = {GPSInterference.com},
  url          = {https://gpsinterference.com/docs},
  note         = {Built from ADS-B flight tracks from adsb.lol globe history, available under the Open Database License (ODbL). Low reported accuracy (NACp 7 or lower) is not confirmed jamming. For one UTC day, use https://api.gpsinterference.com/v1/interference/YYYY-MM-DD}
}

Examples

curl -sS "https://api.gpsinterference.com/v1/interference/latest"
curl -sS "https://api.gpsinterference.com/v1/interference/2026-10-25"

In JavaScript, on this site or a server:

const res = await fetch("https://api.gpsinterference.com/v1/interference/latest");
if (!res.ok) throw new Error(String(res.status));
const data = await res.json();
// data.hexes[i] is { h, g, b, p, c, poly }

The methodology explains how the counts are made.

Embedding the map

The live map is free to embed. Paste this where it should appear:

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

Set it up below and copy the code, or add the options yourself.

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

Options

Add any of these to https://gpsinterference.com/embed, joined with &: