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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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#SourceAgencyBandExpected age
1ADS-B TrafficFAAReal-timereal-time
2METAR (Aviation Routine Weather Reports)NWSSub-5 minute≤ 5 min
3NWS Public Alerts (CAP)NWSSub-5 minute≤ 5 min
4TFR (Temporary Flight Restrictions)FAASub-5 minute≤ 5 min
5NOTAMsFAASub-5 minute≤ 5 min
6FAA Airport Status (delays + ground stops)FAASub-5 minute≤ 5 min
7D-ATIS (Digital Automatic Terminal Information Service)FAASub-5 minute≤ 5 min
8Nav Canada METAR/TAFNavCanadaSub-5 minute≤ 5 min
9FAA Weather CamerasFAASub-hour≤ 10 min
10TAF (Terminal Aerodrome Forecasts)NWSSub-hour≤ 15 min
11SIGMET (Significant Meteorological Information)NWSSub-hour≤ 15 min
12PIREP (Pilot Reports)NWSSub-hour≤ 15 min
13SPC Watches (Severe Thunderstorm + Tornado)NOAASub-hour≤ 15 min
14NWS Center Weather AdvisoriesNWSSub-hour≤ 15 min
15Space Weather (NOAA SWPC)NOAASub-hour≤ 30 min
16NDBC Buoy DataNOAASub-hour≤ 30 min
17NOAA Volcanic Ash AdvisoriesNOAASub-hour≤ 30 min
18CIP/FIP Icing ForecastNWSSub-hour≤ 1 hr
19GTG Turbulence ForecastNWSSub-hour≤ 1 hr
20NOAA Tide PredictionsNOAASub-hour≤ 1 hr
21EPA AirNow (Air Quality Index)EPASub-hour≤ 1 hr
22NWS Meteorological Impact StatementsNWSSub-6 hour≤ 4 hr
23G-AIRMET (Graphical Airmen Meteorological Information)NWSSub-6 hour≤ 6 hr
24Winds and Temperatures AloftNWSSub-6 hour≤ 6 hr
25SPC Convective OutlookNOAASub-6 hour≤ 6 hr
26NHC Tropical CyclonesNOAASub-6 hour≤ 6 hr
27NWS Area Forecast DiscussionNWSSub-6 hour≤ 6 hr
28Mountain Obscuration ForecastNWSSub-6 hour≤ 6 hr
29NWS MOS (Model Output Statistics)NWSSub-6 hour≤ 6 hr
30AIRAC Cycle ScheduleFAADaily≤ 1 d
31Airworthiness Directives (AD)FAADaily≤ 1 d
32Part 135 Operators ListFAADaily≤ 1 d
33FAA Part 145 Repair StationsFAADaily≤ 1 d
34FAA Part 141 Flight SchoolsFAADaily≤ 1 d
35NTSB Aviation Accident DatabaseNTSBDaily≤ 1 d
36USNO Sun & Moon TimesNOAADaily≤ 1 d
37NOAA HMS Smoke Plume ForecastsNOAADaily≤ 1 d
38NIFC Wildfire ActivityNOAADaily≤ 1 d
3914 CFR (Federal Aviation Regulations)FAAWeekly≤ 7 d (cycle)
40FAA Advisory CircularsFAAWeekly≤ 7 d (cycle)
41FAA Aircraft RegistryFAAWeekly≤ 7 d (cycle)
42Instrument Approach ProceduresFAAMonthly≤ 28 d (cycle)
43CIFP (Coded Instrument Flight Procedures)FAAMonthly≤ 28 d (cycle)
44UAS Facility Maps (UASFM)FAAMonthly≤ 28 d (cycle)
45SFAR 194 (Powered-Lift Pilot Certification)FAAMonthly≤ 30 d (cycle)
4649 USC §44809 (Recreational Drone Operations)FAAMonthly≤ 30 d (cycle)
47FAA OrdersFAAMonthly≤ 30 d (cycle)
48FAA Airman RegistryFAAMonthly≤ 30 d (cycle)
49FAA Wildlife Strike DatabaseFAAMonthly≤ 30 d (cycle)
50VFR Sectional ChartsFAAAIRAC cycle (56 d)≤ 56 d (cycle)
51VFR Terminal Area Charts (TAC)FAAAIRAC cycle (56 d)≤ 56 d (cycle)
52IFR Low Enroute ChartsFAAAIRAC cycle (56 d)≤ 56 d (cycle)
53IFR High Enroute ChartsFAAAIRAC cycle (56 d)≤ 56 d (cycle)
54Chart Supplement (formerly A/FD)FAAAIRAC cycle (56 d)≤ 56 d (cycle)
55FAA Airspace BoundariesFAAAIRAC cycle (56 d)≤ 56 d (cycle)
56FAA Airport Hot SpotsFAAAIRAC cycle (56 d)≤ 56 d (cycle)
57FAA Preferred IFR RoutesFAAAIRAC cycle (56 d)≤ 56 d (cycle)
58FAA Digital Obstacle File (DOF)FAAAIRAC cycle (56 d)≤ 56 d (cycle)
59NASA ASRS (Aviation Safety Reporting System)NASAQuarterly+≤ 90 d
60Aeronautical Information Manual (AIM)FAAQuarterly+≤ 180 d
61CFIT (Controlled Flight Into Terrain) Hot SpotsFAAQuarterly+≤ 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.