WxDecoder

US-4879 Weather Air Evac 25 Heliport

Duncan, OklahomaElevation 1,083 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KDUC · 0 NM SE · 13 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 · KDUC
WIND
120@5
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 90° at 5 kt, visibility 10 SM, temperature 17C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests monday mostly sunny, high near 79F, low near 59F, 12% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Tuesday: Chance Rain Showers then Slight Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Monday Mostly Sunny 79/59 SSE 9 kt – 12%
Tuesday Chance Rain Showers then Slight Chance Showers And Thunderstorms 78/60 S 11 kt 18 kt 32% Thunderstorms in the forecast
Wednesday Mostly Sunny 81/62 S 13 kt – 4%
Thursday Mostly Sunny then Chance Showers And Thunderstorms 81/61 S 11 kt – 42%
Friday Rain Showers Likely 72/59 SSE 12 kt – 64%
Saturday Rain Showers Likely 76/60 S 12 kt – 64%
Sunday Mostly Sunny 79 SSW 9 kt – 8%

Source: National Weather Service (office OUN). Forecast issued 0607Z.

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 US-4879. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
1,083 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2345Z 6:45 PM
Sunrise
1246Z 7:46 AM
Loggable night
0011Z (7:11 PM local) → 1220Z (7:20 AM local)
end of evening to start of morning civil twilight
Position lights required
2345Z (6:45 PM local) → 1246Z (7:46 AM local)
sunset to sunrise (91.209)
Night passenger currency
0045Z (7:45 PM local) → 1146Z (6:46 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

Air Evac 25 Heliport is in Duncan, Oklahoma. Field elevation 1,083 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeHeliport
CHARTS & AIRSPACE
ICAO / IATAUS-4879
RegionOklahoma
CountryUnited States
Coordinates34.4744, -97.9642
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

US-4879 traffic patterns

2026-07-14 to 2026-09-04, 3 days observed · data 2026-10-23

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

Busiest day: Fri · Busiest month: Sep

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›B06 (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

US-4879 has no on-field report. Nearest reporting station: KDUC (0 NM SE, VFR).

KDUC Halliburton Field
0 NM SE
VFR
KLAW Lawton Fort Sill Regional Airport
23 NM W
VFR
KFSI Henry Post Army Air Field
24 NM NW
VFR
KCHK Chickasha Municipal Airport
37 NM N
VFR
KSPS Wichita Falls Municipal Airport / Sheppard Air Force Base
39 NM SW
VFR
KCWC Kickapoo Downtown Airport
45 NM SW
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-4879 on OurAirports
FREQUENTLY ASKED
Does US-4879 have a METAR?
No on-field METAR is issued for US-4879. This page uses the nearest reporting station as a reference.
Does US-4879 have a TAF?
No TAF is issued directly for US-4879. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-4879?
US-4879 sits at 1,083 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-4879?
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.