WxDecoder

C66 Weather Monmouth Municipal Airport

Monmouth, IllinoisElevation 753 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KGBG · 9 NM E · 15 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 · KGBG
WIND
140@3
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 140° at 3 kt, visibility 10 SM, temperature 14.1C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 53F, 1% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Friday: Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 53 0 kt – 1%
Monday Mostly Cloudy 74/51 E 4 kt – 3%
Tuesday Mostly Cloudy 73/56 SE 9 kt – 6%
Wednesday Mostly Sunny 76/58 S 9 kt – 20%
Thursday Chance Rain Showers 77/57 SW 9 kt – 42%
Friday Chance Showers And Thunderstorms 77/58 S 9 kt – 42% Thunderstorms in the forecast
Saturday Rain Showers Likely 73/57 S 9 kt – 59%
Sunday Slight Chance Rain Showers 71 W 4 kt – 24%

Source: National Weather Service (office DVN). Forecast issued 0149Z.

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
1 runway
NESW0321
WIND
No on-field weather data
No reporting weather station on the field, so wind components cannot be computed. See nearby stations below.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,899 ft

03/21
Dimensions
2,899 x 60 ft
Surface
Asphalt (good)
Edge lights
MED
RWY 0323°T
VGSIPAPI (P2L)
Traffic patternLeft
RWY 21203°T
VGSIPAPI (P2L)
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
753 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2307Z 6:07 PM
Sunrise
1226Z 7:26 AM
Loggable night
2335Z (6:35 PM local) → 1157Z (6:57 AM local)
end of evening to start of morning civil twilight
Position lights required
2307Z (6:07 PM local) → 1226Z (7:26 AM local)
sunset to sunrise (91.209)
Night passenger currency
0007Z (7:07 PM local) → 1126Z (6:26 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

Monmouth Municipal Airport is in Monmouth, Illinois. Field elevation 753 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSmall airport
ManagerANNETTE ST. LEDGER
Manager phone309-734-2141
AttendedALL TUE-SUN, 0800–1630
CHARTS & AIRSPACE
ICAO / IATAC66
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)KANKAKEE
RegionIllinois
CountryUnited States
Coordinates40.9297, -90.6311
Distance from city2 NM N
SERVICES & LIGHTING
Fuel100LL · MOGAS
Control towerNon-towered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF122.800
UNICOM122.800
FREQUENCIES

Communications

122.800
CTAF
CTAF
122.800
UNICOM
UNICOM

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

C66 traffic patterns

2026-06-20 to 2026-06-20, 1 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: Sat · Busiest month: Jun

FLEET MIX
Unknown 100%

Fleet composition unclear from available data.

TOP AIRCRAFT TYPES
›C195 (Unknown) · ~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

C66 has no on-field report. Nearest reporting station: KGBG (9 NM E, VFR).

KGBG Galesburg Municipal Airport
9 NM E
VFR
KBRL Southeast Iowa Regional Airport
24 NM W
VFR
KMQB Macomb Municipal Airport
25 NM S
VFR
KMLI Quad City International Airport
32 NM N
VFR
KMUT Muscatine Municipal Airport
35 NM NW
VFR
KFSW Fort Madison Municipal Airport
36 NM SW
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
›THIS AIRPORT HAS BEEN SURVEYED BY THE NATIONAL GEODETIC SURVEY.
›EMAIL ADDRESS: ANNETTE.STLEDGER@CITYOFMONMOUTHIL.GOV
›SEASONAL CROPS IN PART 77 SFC; 200 FT FROM RWY END 61 FT L.
›ACTVT PAPI RWY 03 & 21; MIRL RWY 03/21 PRESET LOW INTST, TO INCR INTST & ACTVT - CTAF.
›24 HR SELF SERVE FUEL
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗C66 on OurAirports
FREQUENTLY ASKED
Does C66 have a METAR?
No on-field METAR is issued for C66. This page uses the nearest reporting station as a reference.
Does C66 have a TAF?
No TAF is issued directly for C66. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at C66?
C66 sits at 753 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for C66?
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.