4CO4 Weather St Anthony North Heliport

Westminster, ColoradoElevation 5,506 ftHeliport

OFF-FIELD REFERENCE

Nearest report: KBJC · 6 NM NW · More than 1 hour old

Ceiling 5,500 ft, visibility 8 SM, rain.

No on-field report, so no field flight category. Conditions at the field may differ.

OFF-FIELD REFERENCE · KBJC

WIND

340@8

steady

VISIBILITY

8 SM

12.9 km

CEILING

5,500 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 350° at 7 kt, visibility 10 SM, temperature 11C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight chance rain showers, low near 43F, 45% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

Day	Conditions	Temp F	Wind	Gusts	Precip
Tonight	Chance Rain Showers	43	NNW 7 kt	–	45%
Monday	Patchy Fog then Mostly Sunny	60/38	NE 5 kt	–	12%
Tuesday	Patchy Fog then Sunny	67/39	SSE 5 kt	–	0%
Wednesday	Mostly Sunny	68/40	S 5 kt	–	0%
Thursday	Mostly Sunny	67/42	SE 5 kt	–	1%
Friday	Partly Sunny	67/43	SE 5 kt	–	15%
Saturday	Mostly Sunny	63/42	NE 4 kt	–	13%
Sunday	Partly Sunny then Chance Rain Showers	62	ENE 4 kt	–	42%

Source: National Weather Service (office BOU). Forecast issued 0209Z.

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 4CO4. Enter a runway number or heading to estimate wind components.

RUNWAYS

Runway detail & declared distances

1 runway · longest 82 ft

Dimensions

94 x 54 ft

Surface

Concrete

RWY H1

Traffic patternLeft

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

FIELD CONDITIONS

Field elevation

5,506 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset

0006Z 6:06 PM

Sunrise

1322Z 7:22 AM

Loggable night

0034Z (6:34 PM local) → 1254Z (6:54 AM local)

end of evening to start of morning civil twilight

Position lights required

0006Z (6:06 PM local) → 1322Z (7:22 AM local)

sunset to sunrise (91.209)

Night passenger currency

0106Z (7:06 PM local) → 1222Z (6:22 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

St Anthony North Heliport is in Westminster, Colorado. Field elevation 5,506 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT

OwnershipPrivately owned

UsePrivate use

TypeHeliport

ManagerKATHLEEN MAYER

Manager phone720-321-3911

AttendedContinuous (24 hours)

CHARTS & AIRSPACE

ICAO / IATA4CO4

SectionalDENVER

Center (ARTCC)DENVER

Flight service (AFSS)DENVER

RegionColorado

CountryUnited States

Coordinates39.8504, -105.0172

Distance from city1 NM NE

SERVICES & LIGHTING

Control towerNon-towered

AIRCRAFT ACTIVITY

4CO4 traffic patterns

2026-06-14 to 2026-10-22, 10 days observed · data 2026-10-23

Low confidence

TRAFFIC VOLUME (30-DAY)

AVG LANDINGS/DAY

AVG OPS/DAY

1.5

Operations trend (2 days)

Busiest day: Wed · Busiest month: Jul

FLEET MIX

Helicopter 67%Unknown 33%

Mostly rotorcraft.

TOP AIRCRAFT TYPES

›AS50 (Helicopter) · ~2 landings/mo

›C188 (Unknown) · ~1 landings/mo

LIKELY BASED AIRCRAFT

Low-confidence estimate

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

›AS50 (Helicopter)

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

4CO4 has no on-field report. Nearest reporting station: KBJC (6 NM NW, VFR).

KBJC Rocky Mountain Metropolitan Airport

6 NM NW

VFR

KBDU Boulder Municipal Airport

15 NM NW

VFR

KBKF Buckley Space Force Base

15 NM SE

MVFR

KDEN Denver International Airport

16 NM E

MVFR

KAPA Centennial Airport

19 NM SE

MVFR

KCFO Colorado Air and Space Port

22 NM E

VFR

AIRPORT REMARKS

Operational remarks

›MEDICAL USE.

›ESTAB NW/SE INGRESS/EGRESS TO PROVIDE SEPARATION FM TFC AT CAPRI HELIPORT LCTD APRX 8100 FT EAST WITH N/S INGRESS/EGRESS.

›FOR CD CTC DENVER APCH AT 303-342-1916.

›15 FT LGTD/MKD BLDG 50 FT SW; 200 FT WATERTANK 390 FT EAST OF HELIPAD.

OFFICIAL LINKS & SOURCES

↗Search NOTAMs (official FAA NOTAM Search)

↗4CO4 on OurAirports

FREQUENTLY ASKED

Does 4CO4 have a METAR?

No on-field METAR is issued for 4CO4. This page uses the nearest reporting station as a reference.

Does 4CO4 have a TAF?

No TAF is issued directly for 4CO4. Use the nearest TAF-issuing field as a planning reference.

What is the field elevation at 4CO4?

4CO4 sits at 5,506 ft MSL, which factors into the density-altitude estimate on this page.

Is this an official preflight weather briefing for 4CO4?

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.