Skip to content
Know before you taxi

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

Kelgun Airport (4CO8) Area Aviation Weather & Runway Winds

As of 12:53 PM MDT, Oct 28, based on the nearest station (KAPA), 4CO8 is currently VFR with variable winds at 3 knots, visibility 10+ statute miles, and a 22,000 ft ceiling.

Aviation weather near Kelgun Airport in Castle Rock, CO, decoded from the nearest reporting station (KAPA): conditions and runway crosswinds.

Kelgun Airport (4CO8) is a general aviation airport serving pilots in and around Castle Rock, CO at a field elevation of 6,800 ft. 4CO8 has no weather station of its own. Conditions here are decoded from KAPA, about 16 nm away, the nearest reporting station, and local conditions can differ. It has one runway (01/19), the longest 1,400 ft. The nearest TAF is issued for KAPA.

Ask ATIS AIAsk anything about 4CO8's weather, runways or delays, or search another airport.
VFR
Observed 1853Z (12:53 PM MDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KAPA, 15.9 nm away.

Wind
VRB 3 kt
Visibility
10+ sm
Ceiling
22,000 ft
Altimeter
30.07"
Temp / Dew
63°F / 17°C
dew 22°F / -6°C

Wind variable at 3 kt, visibility 10+ statute miles, a few clouds at 12,000 ft, broken clouds at 22,000 ft, temperature 17°C (63°F), altimeter 30.07 inHg. Conditions are Visual Flight Rules (VFR), ceiling 22,000 ft.

Raw METAR
METAR KAPA 281853Z VRB03KT 10SM FEW120 BKN220 17/M06 A3007 RMK AO2 SLP147 T01721056 PNO $

What changed at KAPA (nearest station)?

Since the 1753Z (11:53 AM MDT) report, compared automatically against the latest METAR.

No significant changes since the 1753Z (11:53 AM MDT) report, conditions are holding steady.

Current pilot readout for 4CO8

Based on the nearest station (KAPA), 4CO8 is currently VFR with variable winds at 3 knots, visibility 10+ statute miles, and a 22,000 ft ceiling. Density altitude is approximately 8,500 ft (field elevation 6,800 ft). Review the latest TAF below for forecast changes before departure.

New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →

Runway wind check

Estimated head/tailwind and crosswind for each runway end from the current reported wind.

Current wind is variable at 3 kt: light and variable wind like this is generally not a factor for runway selection, and with no steady direction there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.

RunwayHead / TailCrosswind
01--
19--

Open the crosswind calculator to try your own wind and runway numbers →

4CO8 runways

1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.

  • Runway 01/19
    1,400 × 50 ft · TURF-G
    Status not monitored
    Current use
    no stated-runway source at 4CO8
    Wind
    01
    no steady wind
    19
    no steady wind
    no active equipment NOTAM receivedView Runway Intelligence →

“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.

24-hour trend

Wind, ceiling and flight category over the last 24 hours.

Wind (kt)Gusts (kt)Bottom strip, flight category:VFRMVFRIFRLIFRNo report
0102019Z07Z18Z

Over the last 23 h: wind 9→3 kt, ceiling 22,000 ft → 22,000 ft.

4CO8 weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.

Loading…
Loading radar…

Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap

NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.

Pilot reports (PIREPs) within 100 NM of 4CO8

Reported by pilots in flight over the past 6 hours, via aviationweather.gov.

PIREP1938Z (1:38 PM MDT) · 11 NM NE of 4CO8 · 16,500 ft MSL · B38M
light to moderate blo 165 turbulence
Show raw report
DEN UA /OV DEN180020/TM 1938/FL165/TP B38M/TB LGT-MOD BLO 165
DEN UAHeader: reporting station and UA: a routine pilot report.
OV DEN180020Location: fix or navaid, optionally with a radial and distance in NM.
TM 1938Reported at 19:38 UTC.
FL165Altitude: 16,500 ft MSL.
TP B38MAircraft type reporting.
TB LGT-MOD BLO 165Turbulence: light to moderate blo 165.
PIREP1925Z (1:25 PM MDT) · 31 NM N of 4CO8 · 14,000 ft MSL · CRJ2
light chop turbulence
Show raw report
DEN UA /OV 20NE/TM 1925/FL140/TP CRJ2/TB LGT CHOP
DEN UAHeader: reporting station and UA: a routine pilot report.
OV 20NELocation: fix or navaid, optionally with a radial and distance in NM.
TM 1925Reported at 19:25 UTC.
FL140Altitude: 14,000 ft MSL.
TP CRJ2Aircraft type reporting.
TB LGT CHOPTurbulence: light chop.
PIREP1912Z (1:12 PM MDT) · 64 NM W of 4CO8 · 23,000 ft MSL · B38M
occasional light turbulence
Show raw report
ASE UA /OV DBL110040/TM 1912/FL230/TP B38M/TB OCNL LGT/RM ZDVWC-26
ASE UAHeader: reporting station and UA: a routine pilot report.
OV DBL110040Location: fix or navaid, optionally with a radial and distance in NM.
TM 1912Reported at 19:12 UTC.
FL230Altitude: 23,000 ft MSL.
TP B38MAircraft type reporting.
TB OCNL LGTTurbulence: occasional light.
RM ZDVWC-26Remarks.
PIREP1909Z (1:09 PM MDT) · 54 NM E of 4CO8 · during climb · EC425
Show raw report
LIC UA /OV HGO350025/TM 1909/FL075/TP EC425/SK SKC/TB NEG/RM UNRESTRICTED VIS DURD AND DURC AT KLIC ZDVWC-27
LIC UAHeader: reporting station and UA: a routine pilot report.
OV HGO350025Location: fix or navaid, optionally with a radial and distance in NM.
TM 1909Reported at 19:09 UTC.
FL075Altitude: 7,500 ft MSL.
TP EC425Aircraft type reporting.
SK SKCSky condition: cloud bases and tops in hundreds of feet MSL.
TB NEGTurbulence: none reported.
RM UNRESTRICTED VIS DURD AND…Remarks.
PIREP1907Z (1:07 PM MDT) · 24 NM N of 4CO8 · during descent · B738
occasional light chop turbulence
Show raw report
DEN UA /OV DEN180007/TM 1907/FL078/TP B738/TB OCNL LGT CHOP/RM DURD RY35L DEN
DEN UAHeader: reporting station and UA: a routine pilot report.
OV DEN180007Location: fix or navaid, optionally with a radial and distance in NM.
TM 1907Reported at 19:07 UTC.
FL078Altitude: 7,800 ft MSL.
TP B738Aircraft type reporting.
TB OCNL LGT CHOPTurbulence: occasional light chop.
RM DURD RY35L DENRemarks.
PIREP1840Z (12:40 PM MDT) · 31 NM N of 4CO8 · 9,000 ft MSL · PC24
moderate turbulence
Show raw report
DEN UA /OV 20NW/TM 1840/FL090/TP PC24/TB MOD
DEN UAHeader: reporting station and UA: a routine pilot report.
OV 20NWLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1840Reported at 18:40 UTC.
FL090Altitude: 9,000 ft MSL.
TP PC24Aircraft type reporting.
TB MODTurbulence: moderate.
PIREP1834Z (12:34 PM MDT) · 31 NM N of 4CO8 · 16,500 ft MSL · UAL1256
Show raw report
ARP UAL1256 3948N 10439W 1834 F165 TB OCNL MOD TURB IC
ARP UAL1256 3948N 10439W 183…Header: reporting station and UA: a routine pilot report.
PIREP1830Z (12:30 PM MDT) · 31 NM N of 4CO8 · during climb · A319
light to moderate 14,000–18,000 ft turbulence
Show raw report
DEN UA /OV 20W/TM 1830/FLDURC/TP A319/TB LGT-MOD 140-180
DEN UAHeader: reporting station and UA: a routine pilot report.
OV 20WLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1830Reported at 18:30 UTC.
FLDURCReported during climb.
TP A319Aircraft type reporting.
TB LGT-MOD 140-180Turbulence: light to moderate 14,000–18,000 ft.

⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.

Recent aviation weather trends at 4CO8

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KAPA reported mostly VFR across 24 observations, with 0 flight-category changes. The strongest gust reached 17 kt, the lowest ceiling was 20,000 ft. Wind most often came from the S.

Last 24 hours
VFR 100%
Wind avg/max: 6/13 kt
Max gust: 17 kt
Lowest ceiling: 20,000 ft
Lowest vis: -
Prevailing wind: S
Category changes: 0
Last 7 days
VFR 90%MVFR 4%IFR 3%LIFR 3%
Wind avg/max: 8/25 kt
Max gust: 38 kt
Lowest ceiling: 200 ft
Lowest vis: 0.5 sm
Prevailing wind: S
Category changes: 5

Most recent change: MVFR → VFR

Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

19
66%
01
34%

TAF | Terminal Aerodrome Forecast

Issued 1736Z (11:36 AM MDT)

TAF KAPA 281736Z 2818/2918 VRB05KT P6SM FEW150 BKN220 FM282000 13006KT P6SM FEW150 BKN220 FM282300 09008KT P6SM SCT220 FM290200 33009KT P6SM FEW200 FM290600 18010KT P6SM FEW200 FM291500 VRB05KT P6SM FEW200

New to TAFs? How to read one →

Get 4CO8 weather alerts in Telegram

Stop refreshing aviation weather manually. Track 4CO8 in ATIS Alerts and get notified when a new METAR changes the picture: a category drop, or wind and ceiling moving toward your minimums.

Track 4CO8 free on Telegram

No live weather from 4CO8

Live crosswind meter

4CO8 has no weather feed online, so the wind comes from KAPA, 16 nm away.

N0119wind calm / variable

Wind is calm or variable. Either end works.

Have a weather station at 4CO8? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Turf · 1,400 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Kelgun Airport (4CO8)
N ↑

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

Reference data from the OurAirports dataset.

Type
General aviation airport
FAA LID
4CO8
City
Castle Rock
State
Colorado
Country
United States
Elevation
6,800 ft
Coordinates
39.3069, -104.8160
Runways
1 physical runway · 2 runway ends
Longest runway
1,400 ft
Weather reporting
Nearest station KAPA
TAF
Nearest KAPA
Time zone
America/Denver
Sunset in
4h 22m

Run a flight school, FBO, or club here? Embed 4CO8's live status on your website, free →

Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

VFRMVFRIFRLIFRNo report

RC flying fields nearby

AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.

All RC flying fields →

See all Colorado airports →

Pilot PIREPs for Kelgun Airport (4CO8)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Kelgun Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.

⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.

No Pilot PIREPs have been submitted for 4CO8 yet. Recently flew here? Help the next pilot by leaving a quick airport note.

Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.

⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.

Spotted incorrect airport info? ✏️ Suggest an edit

How ATIS Alerts works · All US airports · Colorado airports