About the ADS-B ground station map

Why this map exists

The most common question from new ADS-B In users is "why don't I see any weather?" The answer is almost always the same: you're not yet in range of a ground station. This map shows where those stations are, so you can understand what to expect before you fly. It has helped pilots since 2017, and it's free for anyone to use, whatever receiver you fly with.

Where the data comes from

• United States: the FAA's published list of ADS-B ground stations (as of August 31, 2018), released through the FAA's FOIA reading room. It covers 655 stations, including a few in Mexico, the Caribbean and the Pacific. The FAA hasn't published a newer list; the network has been largely complete since its build-out, so this list is still a close match. Original FAA list (PDF).
• Canada: stations of the volunteer-run Canadian In-Flight Information Broadcasting Association, from cifib.ca. CIFIB is adding sites, so check their site for the newest ones.

You can download the full station list as a CSV file (ID, city, state or province, latitude, longitude, tier).

What the colors mean

The FAA assigns each UAT ground station to an altitude tier (high, medium, low or surface), which sets the area it covers and the weather products it uplinks. Canadian CIFIB stations are shown in red. Learn more in our guide to how ADS-B works.

Report a missing or wrong station

Every ground station broadcasts its own position, and the Towers page in the Stratux web interface lists the stations your receiver is hearing. If you spot a station that isn't on the map, or one in the wrong place, email [email protected] with the station ID (if shown), its location, and where you heard it. We'll check it and add it.

For situational awareness only. Station locations are provided as is and may be incomplete or out of date. ADS-B In is advisory; it doesn't replace an official weather briefing or see-and-avoid.

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