WxDecoder

US-6791 Weather Rushmore Heliport

Keystone, South DakotaElevation 4,330 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KRAP · 18 NM NE · 31 min old
Ceiling 700 ft, visibility 2 1/2 SM, mist.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KRAP
WIND
100@7
steady
VISIBILITY
2 1/2 SM
4 km
CEILING
700 ft
lowest BKN/OVC
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 50° at 6 kt, visibility 5 SM, temperature -2C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight areas of fog then widespread fog, low near 29F, 75% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES
Strong winds in the forecastWeather.gov
Tuesday: winds up to 36 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Areas Of Fog then Widespread Fog 29 E 3 kt – 75%
Monday Widespread Fog 38/31 E 4 kt – 70%
Tuesday Sunny 59/36 SW 15 kt 36 kt 5% Strong winds in the forecast
Wednesday Sunny 59/36 S 4 kt 15 kt 7%
Thursday Sunny 62/42 SW 5 kt – 1%
Friday Partly Sunny 59/41 S 4 kt – 34%
Saturday Chance Light Rain 55/39 NW 3 kt – 31%
Sunday Partly Sunny then Chance Light Rain 57 SW 4 kt – 49%

Source: National Weather Service (office UNR). Forecast issued 0422Z.

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-6791. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway

H1
Dimensions
60 x 60 ft
Surface
Concrete
RWY H1

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
4,330 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2354Z 5:54 PM
Sunrise
1321Z 7:21 AM
Loggable night
0023Z (6:23 PM local) → 1252Z (6:52 AM local)
end of evening to start of morning civil twilight
Position lights required
2354Z (5:54 PM local) → 1321Z (7:21 AM local)
sunset to sunrise (91.209)
Night passenger currency
0054Z (6:54 PM local) → 1221Z (6:21 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

Rushmore Heliport is in Keystone, South Dakota. Field elevation 4,330 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeHeliport
ManagerMARK A SCHLAEFLI
Manager phone605-673-2163
CHARTS & AIRSPACE
ICAO / IATAUS-6791
Center (ARTCC)DENVER
Flight service (AFSS)HURON
RegionSouth Dakota
CountryUnited States
Coordinates43.8948, -103.4215
Distance from city0 NM SW
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

US-6791 traffic patterns

2026-08-04 to 2026-10-17, 3 days observed · data 2026-10-23

Low confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1.5
AVG OPS/DAY
1.5
Activity trend over 2 days: falling, from 2 to 1 operations per dayOperations trend (2 days)

Busiest day: Fri · Busiest month: Aug

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›R66 (Helicopter) · ~2 landings/mo
›UNKN (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-6791 has no on-field report. Nearest reporting station: KRAP (18 NM NE, IFR).

KRAP Rapid City Regional Airport
18 NM NE
IFR
KRCA Ellsworth Air Force Base
20 NM NE
LIFR
KSPF Black Hills Airport-Clyde Ice Field
38 NM NW
VFR
KECS Mondell Field
39 NM W
MVFR
KCDR Chadron Municipal Airport
65 NM S
IFR
KIEN Pine Ridge Airport
66 NM SE
IFR
AIRPORT REMARKS

Operational remarks

›OWNER DESIRES HELI NOT BE CHARTED.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-6791 on OurAirports
FREQUENTLY ASKED
Does US-6791 have a METAR?
No on-field METAR is issued for US-6791. This page uses the nearest reporting station as a reference.
Does US-6791 have a TAF?
No TAF is issued directly for US-6791. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-6791?
US-6791 sits at 4,330 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-6791?
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.