Live freshnessShow, don’t tell.

The Data Freshness Leaderboard

61 sources, ordered by how often each is refreshed. ADS-B traffic is sub-second. 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	FAA	Real-time	real-time
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	FAA Weather Cameras	FAA	Sub-hour	≤ 10 min
10	TAF (Terminal Aerodrome Forecasts)	NWS	Sub-hour	≤ 15 min
11	SIGMET (Significant Meteorological Information)	NWS	Sub-hour	≤ 15 min
12	PIREP (Pilot Reports)	NWS	Sub-hour	≤ 15 min
13	SPC Watches (Severe Thunderstorm + Tornado)	NOAA	Sub-hour	≤ 15 min
14	NWS Center Weather Advisories	NWS	Sub-hour	≤ 15 min
15	Space Weather (NOAA SWPC)	NOAA	Sub-hour	≤ 30 min
16	NDBC Buoy Data	NOAA	Sub-hour	≤ 30 min
17	NOAA Volcanic Ash Advisories	NOAA	Sub-hour	≤ 30 min
18	CIP/FIP Icing Forecast	NWS	Sub-hour	≤ 1 hr
19	GTG Turbulence Forecast	NWS	Sub-hour	≤ 1 hr
20	NOAA Tide Predictions	NOAA	Sub-hour	≤ 1 hr
21	EPA AirNow (Air Quality Index)	EPA	Sub-hour	≤ 1 hr
22	NWS Meteorological Impact Statements	NWS	Sub-6 hour	≤ 4 hr
23	G-AIRMET (Graphical Airmen Meteorological Information)	NWS	Sub-6 hour	≤ 6 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	Mountain Obscuration Forecast	NWS	Sub-6 hour	≤ 6 hr
29	NWS MOS (Model Output Statistics)	NWS	Sub-6 hour	≤ 6 hr
30	AIRAC Cycle Schedule	FAA	Daily	≤ 1 d
31	Airworthiness Directives (AD)	FAA	Daily	≤ 1 d
32	Part 135 Operators List	FAA	Daily	≤ 1 d
33	FAA Part 145 Repair Stations	FAA	Daily	≤ 1 d
34	FAA Part 141 Flight Schools	FAA	Daily	≤ 1 d
35	NTSB Aviation Accident Database	NTSB	Daily	≤ 1 d
36	USNO Sun & Moon Times	NOAA	Daily	≤ 1 d
37	NOAA HMS Smoke Plume Forecasts	NOAA	Daily	≤ 1 d
38	NIFC Wildfire Activity	NOAA	Daily	≤ 1 d
39	14 CFR (Federal Aviation Regulations)	FAA	Weekly	≤ 7 d (cycle)
40	FAA Advisory Circulars	FAA	Weekly	≤ 7 d (cycle)
41	FAA Aircraft Registry	FAA	Weekly	≤ 7 d (cycle)
42	Instrument Approach Procedures	FAA	Monthly	≤ 28 d (cycle)
43	CIFP (Coded Instrument Flight Procedures)	FAA	Monthly	≤ 28 d (cycle)
44	UAS Facility Maps (UASFM)	FAA	Monthly	≤ 28 d (cycle)
45	SFAR 194 (Powered-Lift Pilot Certification)	FAA	Monthly	≤ 30 d (cycle)
46	49 USC §44809 (Recreational Drone Operations)	FAA	Monthly	≤ 30 d (cycle)
47	FAA Orders	FAA	Monthly	≤ 30 d (cycle)
48	FAA Airman Registry	FAA	Monthly	≤ 30 d (cycle)
49	FAA Wildlife Strike Database	FAA	Monthly	≤ 30 d (cycle)
50	VFR Sectional Charts	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
51	VFR Terminal Area Charts (TAC)	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
52	IFR Low Enroute Charts	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
53	IFR High Enroute Charts	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
54	Chart Supplement (formerly A/FD)	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
55	FAA Airspace Boundaries	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
56	FAA Airport Hot Spots	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
57	FAA Preferred IFR Routes	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
58	FAA Digital Obstacle File (DOF)	FAA	AIRAC cycle (56 d)	≤ 56 d (cycle)
59	NASA ASRS (Aviation Safety Reporting System)	NASA	Quarterly+	≤ 90 d
60	Aeronautical Information Manual (AIM)	FAA	Quarterly+	≤ 180 d
61	CFIT (Controlled Flight Into Terrain) Hot Spots	FAA	Quarterly+	≤ 365 d

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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.