WxDecoder

3CO2 Weather Mertens Airport

Sterling, ColoradoElevation 4,192 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KSTK · 3 NM E · 14 min old
Ceiling 600 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KSTK
WIND
050@8
steady
VISIBILITY
10 SM
16.1 km
CEILING
600 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 7C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight areas of fog, low near 42F, 77% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Tonight: Areas Of Fog. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Areas Of Fog 42 ENE 10 kt 17 kt 77% Thunderstorms in the forecast
Monday Rain Showers then Partly Sunny 55/32 NNE 11 kt 18 kt 75%
Tuesday Areas Of Fog then Sunny 67/34 SSE 5 kt – 1%
Wednesday Mostly Sunny 69/34 SSW 4 kt – 0%
Thursday Mostly Sunny 68/36 SSW 4 kt – 1%
Friday Mostly Sunny 69/39 SE 5 kt – 21%
Saturday Slight Chance Rain Showers 64/36 NNW 5 kt – 24%
Sunday Partly Sunny then Chance Rain Showers 64 SSW 7 kt – 51%

Source: National Weather Service (office BOU). Forecast issued 0249Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

OUR HEADSET PICK · NOT SPONSORED

DC

David Clark DC ONE-X

Not sponsored, just the headset we'd buy ourselves: the DC ONE-X, with hybrid noise canceling, Bluetooth, and 30+ hour battery. And David Clark's A+ customer service is the real reason we recommend them.

Visit David Clark
RUNWAYS & WIND
Crosswind calculator
No runway layout is available for 3CO2. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 4,000 ft

18/36
Dimensions
4,000 x 100 ft
Surface
Gravel
RWY 18
Traffic patternRight
RWY 36
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

Field elevation
4,192 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2358Z 5:58 PM
Sunrise
1316Z 7:16 AM
Loggable night
0026Z (6:26 PM local) → 1248Z (6:48 AM local)
end of evening to start of morning civil twilight
Position lights required
2358Z (5:58 PM local) → 1316Z (7:16 AM local)
sunset to sunrise (91.209)
Night passenger currency
0058Z (6:58 PM local) → 1216Z (6:16 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

Mertens Airport is in Sterling, Colorado. Field elevation 4,192 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerDARREL MERTENS
Manager phone(970) 522-1941
AttendedDaily, 0700–1600
CHARTS & AIRSPACE
ICAO / IATA3CO2
SectionalCHEYENNE
Center (ARTCC)DENVER
Flight service (AFSS)DENVER
RegionColorado
CountryUnited States
Coordinates40.6164, -103.3324
Distance from city6 NM W
SERVICES & LIGHTING
Fuel100LL · Jet A
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

3CO2 has no on-field report. Nearest reporting station: KSTK (3 NM E, IFR).

KSTK Sterling Municipal Airport
3 NM E
IFR
KAKO Colorado Plains Regional Airport
27 NM S
LIFR
KSNY Sidney Municipal Airport Lloyd W Carr Field
33 NM NE
VFR
KGXY Greeley–Weld County Airport
60 NM W
LIFR
KCFO Colorado Air and Space Port
75 NM SW
IFR
KCYS Cheyenne Regional Jerry Olson Field
75 NM NW
IFR
AIRPORT REMARKS

Operational remarks

›PVT USE ONLY. TFC PTN W OF ARPT TO AVOID CONFLICT WITH TFC AT CROSSON FLD.
›970-520-1941 (CELL)
›FOR CD CTC DENVER ARTCC AT 303-651-4257.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗3CO2 on OurAirports
FREQUENTLY ASKED
Does 3CO2 have a METAR?
No on-field METAR is issued for 3CO2. This page uses the nearest reporting station as a reference.
Does 3CO2 have a TAF?
No TAF is issued directly for 3CO2. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 3CO2?
3CO2 sits at 4,192 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 3CO2?
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.