WxDecoder

4MO8 Weather Martens Airport

Atherton, MissouriElevation 720 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KMKC · 16 NM W · 53 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KMKC
WIND
170@7
steady
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 160° at 7 kt, visibility 10 SM, temperature 24C. Treat this as supplemental, not an aviation observation. Forecast suggests this afternoon partly sunny, high near 78F, low near 54F, 0% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Slight Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
This Afternoon Partly Sunny 78/54 SSE 3 kt – 0%
Monday Mostly Sunny 77/54 S 6 kt – 2%
Tuesday Slight Chance Rain Showers 73/55 S 6 kt – 19%
Wednesday Mostly Sunny 79/59 S 10 kt – 19%
Thursday Slight Chance Showers And Thunderstorms 81/60 SSW 7 kt – 22% Thunderstorms in the forecast
Friday Chance Showers And Thunderstorms 77/57 S 7 kt – 49%
Saturday Rain Showers Likely 72/56 S 5 kt – 67%

Source: National Weather Service (office EAX). Forecast issued 2147Z.

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 4MO8. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,100 ft

09/27
Dimensions
2,100 x 80 ft
Surface
Turf (good)
RWY 09
RWY 27

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
720 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2324Z 6:24 PM
Sunrise
1238Z 7:38 AM
Loggable night
2352Z (6:52 PM local) → 1210Z (7:10 AM local)
end of evening to start of morning civil twilight
Position lights required
2324Z (6:24 PM local) → 1238Z (7:38 AM local)
sunset to sunrise (91.209)
Night passenger currency
0024Z (7:24 PM local) → 1138Z (6:38 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

Martens Airport is in Atherton, Missouri. Field elevation 720 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerCARL MARTENS
Manager phone816-796-7094
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATA4MO8
SectionalKANSAS CITY
Center (ARTCC)KANSAS CITY
Flight service (AFSS)COLUMBIA
RegionMissouri
CountryUnited States
Coordinates39.2067, -94.2697
Distance from city3 NM NE
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

4MO8 traffic patterns

2026-09-18 to 2026-09-18, 1 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
2
Operations trend (1 days)

Busiest day: Fri · Busiest month: Sep

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›H500 (Helicopter) · ~1 landings/mo
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

4MO8 has no on-field report. Nearest reporting station: KMKC (16 NM W, VFR).

KMKC Charles B. Wheeler Downtown Airport
16 NM W
VFR
KMCI Kansas City International Airport
21 NM W
VFR
KOJC Johnson County Executive Airport
31 NM SW
VFR
KIXD New Century AirCenter Airport
37 NM SW
VFR
KSZL Whiteman Air Force Base
44 NM SE
VFR
KSTJ Rosecrans Memorial Airport
45 NM NW
VFR
AIRPORT REMARKS

Operational remarks

›PROVIDED APPROACH TO EACH RY IS 20:1 AND TRANSITIONAL SLOPE IS 7:1.
›FOR CD CTC KANSAS CITY APCH AT 816-329-2710.
›50 FT PLINE 2500 FT WEST.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗4MO8 on OurAirports
FREQUENTLY ASKED
Does 4MO8 have a METAR?
No on-field METAR is issued for 4MO8. This page uses the nearest reporting station as a reference.
Does 4MO8 have a TAF?
No TAF is issued directly for 4MO8. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 4MO8?
4MO8 sits at 720 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 4MO8?
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.