Live freshnessShow, don’t tell.

The Data Freshness Leaderboard

48 sources, ordered by how often each is refreshed. ADS-B traffic refreshes every 60 seconds. Chart cycles are 56 days. If the data is older than expected, this page tells you.

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#	Source	Agency	Band	Expected age
1	ADS-B Traffic	OpenSky Network	Sub-5 minute	≤ 1 min
2	METAR (Aviation Routine Weather Reports)	NWS	Sub-5 minute	≤ 5 min
3	NWS Public Alerts (CAP)	NWS	Sub-5 minute	≤ 5 min
4	TFR (Temporary Flight Restrictions)	FAA	Sub-5 minute	≤ 5 min
5	NOTAMs	FAA	Sub-5 minute	≤ 5 min
6	FAA Airport Status (delays + ground stops)	FAA	Sub-5 minute	≤ 5 min
7	D-ATIS (Digital Automatic Terminal Information Service)	FAA	Sub-5 minute	≤ 5 min
8	Nav Canada METAR/TAF	NavCanada	Sub-5 minute	≤ 5 min
9	TAF (Terminal Aerodrome Forecasts)	NWS	Sub-hour	≤ 10 min
10	FAA Weather Cameras	FAA	Sub-hour	≤ 10 min
11	SIGMET (Significant Meteorological Information)	NWS	Sub-hour	≤ 15 min
12	G-AIRMET (Graphical Airmen Meteorological Information)	NWS	Sub-hour	≤ 15 min
13	PIREP (Pilot Reports)	NWS	Sub-hour	≤ 15 min
14	SPC Watches (Severe Thunderstorm + Tornado)	NOAA	Sub-hour	≤ 15 min
15	Mountain Obscuration Forecast	NWS	Sub-hour	≤ 15 min
16	Icing Forecast (NOAA Aviation Weather Center)	NWS	Sub-hour	≤ 15 min
17	Turbulence Forecast (NOAA Aviation Weather Center)	NWS	Sub-hour	≤ 15 min
18	International SIGMETs (NWS/AWC)	NWS	Sub-hour	≤ 15 min
19	NWS Center Weather Advisories	NWS	Sub-hour	≤ 15 min
20	Space Weather (NOAA SWPC)	NOAA	Sub-hour	≤ 1 hr
21	NOAA Tide Predictions	NOAA	Sub-hour	≤ 1 hr
22	EPA AirNow (Air Quality Index)	EPA	Sub-hour	≤ 1 hr
23	NWS Meteorological Impact Statements	NWS	Sub-6 hour	≤ 4 hr
24	Winds and Temperatures Aloft	NWS	Sub-6 hour	≤ 6 hr
25	SPC Convective Outlook	NOAA	Sub-6 hour	≤ 6 hr
26	NHC Tropical Cyclones	NOAA	Sub-6 hour	≤ 6 hr
27	NWS Area Forecast Discussion	NWS	Sub-6 hour	≤ 6 hr
28	DAFS Turbulence + Icing Guidance (GTG/IFI)	NOAA	Sub-6 hour	≤ 6 hr
29	NDBC Buoy Data	NOAA	Sub-6 hour	≤ 6 hr
30	NWS MOS (Model Output Statistics)	NWS	Sub-6 hour	≤ 6 hr
31	AIRAC Cycle Schedule	FAA	Daily	≤ 1 d
32	Airworthiness Directives (AD)	FAA	Daily	≤ 1 d
33	FAA Aircraft Registry	FAA	Daily	≤ 1 d
34	Part 135 Operators List	FAA	Daily	≤ 1 d
35	NTSB Aviation Accident Database	NTSB	Daily	≤ 1 d
36	FAA Digital Obstacle File (DOF)	FAA	Daily	≤ 1 d
37	NOAA HMS Smoke Plume Forecasts	NOAA	Daily	≤ 1 d
38	FAA Wildlife Strike Database	FAA	Weekly	≤ 7 d (cycle)
39	FAA Preferred IFR Routes	FAA	Bi-weekly	≤ 14 d (cycle)
40	Instrument Approach Procedures	FAA	Monthly	≤ 28 d (cycle)
41	CIFP (Coded Instrument Flight Procedures)	FAA	Monthly	≤ 28 d (cycle)
42	UAS Facility Maps (UASFM)	FAA	Monthly	≤ 28 d (cycle)
43	FAA Airman Registry	FAA	Monthly	≤ 30 d (cycle)
44	VFR Sectional Charts	FAA	56-day chart cycle	≤ 56 d (cycle)
45	VFR Terminal Area Charts (TAC)	FAA	56-day chart cycle	≤ 56 d (cycle)
46	IFR Low Enroute Charts	FAA	56-day chart cycle	≤ 56 d (cycle)
47	IFR High Enroute Charts	FAA	56-day chart cycle	≤ 56 d (cycle)
48	FAA Airspace Boundaries	FAA	56-day chart cycle	≤ 56 d (cycle)

Catalogued, but not on a refresh clock

These sources have no refresh interval, so they are not ranked above. We list them with the reason rather than publishing a number we do not deliver.

Source	Agency	Status
CFIT (Controlled Flight Into Terrain) Hot Spots	FAA	Announced — not ingested yet
Chart Supplement (formerly A/FD)	FAA	Announced — not ingested yet
FAA Airport Hot Spots	FAA	Announced — not ingested yet
FAA Part 141 Flight Schools	FAA	Loaded by our operators from FAA records, plus verified listings — no fixed schedule
FAA Part 145 Repair Stations	FAA	Loaded by our operators from FAA records, plus verified listings — no fixed schedule
USNO Sun & Moon Times	USNO	Fetched per request — nothing stored on a schedule
Wildfire Activity (NASA FIRMS + NIFC WFIGS)	NASA + NIFC	Fetched per request — nothing stored on a schedule
14 CFR (Federal Aviation Regulations)	FAA	Versioned in-app — refreshed on FAA publication
49 USC §44809 (Recreational Drone Operations)	FAA	Versioned in-app — refreshed on FAA publication
Aeronautical Information Manual (AIM)	FAA	Versioned in-app — refreshed on FAA publication
FAA Advisory Circulars	FAA	Versioned in-app — refreshed on FAA publication
FAA Orders	FAA	Versioned in-app — refreshed on FAA publication
SFAR No. 120 (Powered-Lift Pilot Certification)	FAA	Versioned in-app — refreshed on FAA publication

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Why we publish this

Most pilots cannot tell you when their app last fetched a NOTAM. AeroCopilot tells you the expected freshness for every source — and exposes it on a leaderboard you can audit.

Want the deep dive on a source?

Each row links to a page with what we ingest, how we use it, and the related features.