WxDecoder

3G8 Weather Gen-Airpark

Geneseo, IllinoisElevation 645 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KMLI · 18 NM W · 40 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 · KMLI
WIND
Calm
no steady wind
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 calm, visibility 10 SM, temperature 13C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 52F, 1% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 52 0 kt – 1%
Monday Mostly Cloudy 71/49 NE 4 kt – 3%
Tuesday Mostly Cloudy 74/56 SE 9 kt – 5%
Wednesday Mostly Sunny 76/59 S 9 kt – 22%
Thursday Chance Showers And Thunderstorms 78/57 SW 9 kt – 44% Thunderstorms in the forecast
Friday Chance Showers And Thunderstorms 78/58 S 9 kt – 44%
Saturday Chance Rain Showers 73/57 S 9 kt – 59%
Sunday Chance Rain Showers 71 SW 9 kt – 30%

Source: National Weather Service (office DVN). Forecast issued 0431Z.

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 3G8. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,568 ft

09/27
Dimensions
2,568 x 120 ft
Surface
Turf (good)
Edge lights
NSTD
RWY 09
Displaced threshold193 ft
RWY 27
Displaced threshold285 ft

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
645 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2304Z 6:04 PM
Sunrise
1224Z 7:24 AM
Loggable night
2333Z (6:33 PM local) → 1156Z (6:56 AM local)
end of evening to start of morning civil twilight
Position lights required
2304Z (6:04 PM local) → 1224Z (7:24 AM local)
sunset to sunrise (91.209)
Night passenger currency
0004Z (7:04 PM local) → 1124Z (6:24 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

Gen-Airpark is in Geneseo, Illinois. Field elevation 645 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UseOpen to the public
TypeSmall airport
ManagerSCOTT DARIAN
Manager phone309-314-6849
AttendedDaily, IREG
CHARTS & AIRSPACE
ICAO / IATA3G8
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)KANKAKEE
RegionIllinois
CountryUnited States
Coordinates41.4398, -90.1101
Distance from city2 NM SE
SERVICES & LIGHTING
Control towerNon-towered
Field lightingSunset to sunrise
CTAF122.900
FREQUENCIES

Communications

122.900
CTAF
CTAF

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

AIRCRAFT ACTIVITY

3G8 traffic patterns

2026-10-19 to 2026-10-19, 1 days observed · data 2026-10-23

Low confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
2
Operations trend (1 days)

Busiest day: Mon · Busiest month: Oct

FLEET MIX
Piston single 100%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›C172 (Piston single) · ~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

3G8 has no on-field report. Nearest reporting station: KMLI (18 NM W, VFR).

KMLI Quad City International Airport
18 NM W
VFR
KDVN Davenport Municipal Airport
24 NM NW
VFR
KCWI Clinton Municipal Airport
25 NM NW
VFR
KSQI Whiteside County Airport - Joseph H Bittorf Field
27 NM NE
VFR
KGBG Galesburg Municipal Airport
33 NM SW
VFR
KVYS Illinois Valley Regional Airport Walter A Duncan Field
43 NM E
VFR
AIRPORT REMARKS

Operational remarks

›CO-MANGER SCOTT DURIAN (309) 314-6849
›FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
›OBSTN FENCE 30 FT NORTH APCH END RY 09 (6 FT AGL) NOT LGTD.
›EMAIL ADDRESS: AIRPORT3G8@GMAIL.COM (ALL LOWER CASE)
›PARACHUTE ACTIVITY ON & INVOF ARPT.
›THIS AIRPORT HAS BEEN SURVEYED BY THE NATIONAL GEODETIC SURVEY.
›NSTD LIRL; NSTD SPACING & INTST.
›09/27 DSPLCD THLDS MKD WITH A 10 FT STRIP OF GRAVEL OUTWARD FM BOTH SIDES OF RY.
›ROAD 3 FT BLO RY END.
›APCH RATIO 20:1 TO DSPLCD THR.
›APCH RATIO 20:1 TO DSPLCD THLD.
›TSNT MUST SUPPLY OWN ROPES.
›OBSTNS IN RWY APP SLOPE SFC RMVD/LWRD, OR RWY THR DSPLCD & MKD TO PRVD 20:1 APP OVER OBSTNS.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗3G8 on OurAirports
FREQUENTLY ASKED
Does 3G8 have a METAR?
No on-field METAR is issued for 3G8. This page uses the nearest reporting station as a reference.
Does 3G8 have a TAF?
No TAF is issued directly for 3G8. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 3G8?
3G8 sits at 645 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 3G8?
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.