wxdecoder
KMWN

Mount Washington Observatory

New HampshireElevation 6,288 ftHeliport
CURRENT STATUS
VFRMore than 1 hour old
Ceiling 18,000 ft, visibility 35 SM.
FLIGHT CATEGORY
VFR
ceiling & visibility
WIND
300@10
steady
VISIBILITY
35 SM
56.3 km
CEILING
18,000 ft
lowest BKN/OVC
CURRENT METAR

Decoded observation

Observed 0151Z (9:51 PM local) · More than 1 hour old

KMWN is currently VFR. Winds are from the northwest at 10 knots. Visibility is 35 statute miles. The ceiling is 18,000 feet AGL.

WIND
300° at 10 kt
Steady.
VISIBILITY
35 statute miles
56.3 km, good.
CEILING & SKY
Ceiling 18,000 ft
Lowest broken or overcast layer.
TEMP / DEWPOINT
9°C / 9°C
48°F / 48°F. 0°C spread.
WEATHER & HAZARDS
No significant hazards
No precipitation or obscuration reported.

Hover or tap any group for a plain-English explanation.

REMARKS: DECODED
CAP
unrecognized remark group
CLOUD
unrecognized remark group
OHD HZ DSNT ALQDS
observed: overhead haze distant in all quadrants
T00940089
precise temperature 9.4°C, dew point 8.9°C
SUGGESTED RISK · TRAINING USE

Suggested risk level: Low

›No TAF available for this airport.

A suggested risk level for training and situational awareness only, not a go/no-go authority. Verify with official sources and apply your personal minimums.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

Current aviation conditions show flight category VFR, wind from 300° at 10 kt, visibility 35 SM, ceiling 18,000 ft. Forecast suggests tonight partly cloudy, low near 47F, 0% chance of precipitation. Key risks: thunderstorms in the forecast; strong winds in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Tuesday: Chance Rain Showers then Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
Strong winds in the forecastWeather.gov
Wednesday: winds up to 26 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Partly Cloudy 47 NE 13 kt – 0%
Monday Mostly Sunny 59/45 SE 13 kt – 14%
Tuesday Chance Rain Showers then Chance Showers And Thunderstorms 53/45 S 13 kt 22 kt 66% Thunderstorms in the forecast
Wednesday Light Rain Likely 47/44 S 26 kt – 71% Strong winds in the forecast
Thursday Showers And Thunderstorms 48/45 NE 35 kt – 75%
Friday Chance Rain Showers 53/47 N 26 kt – 36%
Saturday Mostly Sunny then Slight Chance Showers And Thunderstorms 57/50 SW 13 kt – 29%
Sunday Chance Rain Showers then Chance Showers And Thunderstorms 56 S 13 kt – 67%

Source: National Weather Service (office GYX). Forecast issued 0253Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for KMWN. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
6,288 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0017Z 8:17 PM
Sunrise
0926Z 5:26 AM
Loggable night
0050Z (8:50 PM local) → 0853Z (4:53 AM local)
end of evening to start of morning civil twilight
Position lights required
0017Z (8:17 PM local) → 0926Z (5:26 AM local)
sunset to sunrise (91.209)
Night passenger currency
0117Z (9:17 PM local) → 0826Z (4:26 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Mount Washington Observatory is in New Hampshire. Field elevation 6,288 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeHeliport
CHARTS & AIRSPACE
ICAO / IATAKMWN
RegionNew Hampshire
CountryUnited States
Coordinates44.2703, -71.3033
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

KMWN traffic patterns

2026-06-13 to 2026-06-13, 1 days observed · data 2026-07-25

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
3
AVG OPS/DAY
8
Operations trend (1 days)

Busiest day: Sat · Busiest month: Jun

FLEET MIX
Other 100%

Mixed or uncategorized fleet.

TOP AIRCRAFT TYPES
›GLID (Other) · ~3 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly other aircraft.

›GLID (Other)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

Current flight category at nearby reporting stations.

KHIE Mount Washington Regional Airport
12 NM NW
VFR
KBML Berlin Regional Airport
19 NM N
VFR
KIZG Eastern Slopes Regional Airport
23 NM SE
VFR
KCDA Caledonia County Airport
36 NM NW
VFR
KLCI Laconia Municipal Airport
42 NM S
VFR
KLEW Auburn Lewiston Municipal Airport
46 NM E
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗Official airport website
↗Wikipedia
↗KMWN on OurAirports
FREQUENTLY ASKED
Does KMWN have a METAR?
Yes. KMWN has a current METAR observation, decoded into plain English on this page.
Does KMWN have a TAF?
When KMWN issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.
What is the field elevation at KMWN?
KMWN sits at 6,288 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KMWN?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.