WxDecoder

4LL3 Weather John L Coppernoll Airport

Stockton, IllinoisElevation 930 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KFEP · 18 NM E · 18 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 · KFEP
WIND
180@5
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 calm, visibility 10 SM. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 50F, 2% 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 50 N 4 kt – 2%
Monday Mostly Cloudy 64/46 NE 9 kt – 3%
Tuesday Mostly Cloudy 71/54 SE 9 kt – 7%
Wednesday Mostly Sunny 73/56 S 9 kt – 41%
Thursday Chance Showers And Thunderstorms 73/54 SW 9 kt – 41% Thunderstorms in the forecast
Friday Chance Rain Showers 72/55 SE 9 kt – 42%
Saturday Rain Showers Likely 70/54 SE 9 kt – 60%
Sunday Chance Rain Showers 68 SW 9 kt – 31%

Source: National Weather Service (office DVN). Forecast issued 0113Z.

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 4LL3. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail

N/S
Dimensions
2,000 x 100 ft
Surface
TURF
FIELD CONDITIONS

Field elevation

Field elevation
930 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2303Z 6:03 PM
Sunrise
1225Z 7:25 AM
Loggable night
2331Z (6:31 PM local) → 1156Z (6:56 AM local)
end of evening to start of morning civil twilight
Position lights required
2303Z (6:03 PM local) → 1225Z (7:25 AM local)
sunset to sunrise (91.209)
Night passenger currency
0003Z (7:03 PM local) → 1125Z (6:25 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

John L Coppernoll Airport is in Stockton, Illinois. Field elevation 930 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSmall airport
CHARTS & AIRSPACE
ICAO / IATA4LL3
RegionIllinois
CountryUnited States
Coordinates42.3083, -89.9835
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

4LL3 has no on-field report. Nearest reporting station: KFEP (18 NM E, VFR).

KFEP Albertus Airport
18 NM E
VFR
KCWI Clinton Municipal Airport
33 NM SW
VFR
KDBQ Dubuque Regional Airport
33 NM W
VFR
KSQI Whiteside County Airport - Joseph H Bittorf Field
37 NM S
VFR
KRFD Chicago Rockford International Airport
40 NM E
VFR
KJVL Southern Wisconsin Regional Airport
46 NM NE
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗4LL3 on OurAirports
FREQUENTLY ASKED
Does 4LL3 have a METAR?
No on-field METAR is issued for 4LL3. This page uses the nearest reporting station as a reference.
Does 4LL3 have a TAF?
No TAF is issued directly for 4LL3. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 4LL3?
4LL3 sits at 930 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 4LL3?
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.