Chatham Seaplane Base (CYM) Area Aviation Weather & Runway Winds
As of 6:56 AM AKDT, Oct 28, based on the nearest station (PAGN), CYM is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported.
Aviation weather near Chatham Seaplane Base in Chatham, AK, decoded from the nearest reporting station (PAGN): conditions and runway crosswinds.
Chatham Seaplane Base (CYM) is a seaplane base in Chatham, AK. CYM has no weather station of its own. Conditions here are decoded from PAGN, about 12 nm away, the nearest reporting station, and local conditions can differ. It has 2 physical runways (NW, SE), the longest 10,000 ft. The nearest TAF is issued for PASI.
No weather station at this airport: showing the nearest station PAGN, 12.3 nm away.
Wind calm, visibility 10+ statute miles, no cloud data, temperature 3°C (38°F), altimeter 30.31 inHg. Conditions are Visual Flight Rules (VFR).
METAR PAGN 281456Z AUTO 00000KT 10SM CLR 03/M01 A3031 RMK AO2 SLP254 T00331006 50001 $
What changed at PAGN (nearest station)?
Since the 1356Z (5:56 AM AKDT) report, compared automatically against the latest METAR.
No significant changes since the 1356Z (5:56 AM AKDT) report, conditions are holding steady.
Current pilot readout for CYM
Based on the nearest station (PAGN), CYM is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported. Density altitude is approximately -1,900 ft (field elevation 0 ft). CYM does not publish a TAF. The nearest TAF station is PASI, about 31 nm away.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| NW | 10,000 ft | WATER | - | - |
| SE | 10,000 ft | WATER | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 23 h: wind 3→0 kt, ceiling unlimited → unlimited.
CYM weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Recent aviation weather trends at CYM
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station PAGN reported mostly VFR across 26 observations, with 2 flight-category changes. The lowest ceiling was 300 ft. Wind most often came from the SE.
Most recent change: LIFR → VFR
Most recent change: LIFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- NW/SE
- 100%
Get CYM weather alerts in Telegram
Stop refreshing aviation weather manually. Track CYM in ATIS Alerts and get notified when a new METAR changes the picture: a category drop, or wind and ceiling moving toward your minimums.
Track CYM free on TelegramField aerial
North up
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Attended
- Unattended
- Landing fee
- No
- Control tower
- None
Airport
- Type
- Seaplane base
- IATA
- CYM
- FAA LID
- 05AA
- City
- Chatham
- State
- Alaska
- Country
- United States
- Elevation
- 0 ft
- Coordinates
- 57.5149, -134.9460
- Runways
- 2 physical runways · 2 runway ends
- Longest runway
- 10,000 ft
- Weather reporting
- Nearest station PAGN
- TAF
- Nearest PASI
- Time zone
- America/Sitka
- Next sunset
- 10h 13m
Run a flight school, FBO, or club here? Embed CYM's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
3 airports25–50 NM
9 airports+3 more within 50 NM
50–100 NM
7 airports+1 more within 100 NM
Pilot PIREPs for Chatham Seaplane Base (CYM)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Chatham Seaplane Base, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for CYM yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
Spotted incorrect airport info? ✏️ Suggest an edit