John L Coppernoll Airport (4LL3) Area Aviation Weather & Runway Winds
As of 2:15 PM CDT, Oct 28, based on the nearest station (KSFY), 4LL3 is currently VFR with winds from 200° at 9 knots gusting 15, visibility 10+ statute miles, and a 8,000 ft ceiling.
Aviation weather near John L Coppernoll Airport in Stockton, IL, decoded from the nearest reporting station (KSFY): conditions and runway crosswinds.
John L Coppernoll Airport (4LL3) is a general aviation airport serving pilots in and around Stockton, IL at a field elevation of 930 ft. 4LL3 has no weather station of its own. Conditions here are decoded from KSFY, about 17 nm away, the nearest reporting station, and local conditions can differ. It has 2 physical runways (N, S), the longest 2,000 ft. The nearest TAF is issued for KDBQ.
No weather station at this airport: showing the nearest station KSFY, 16.7 nm away.
Wind from the south-southwest (200°) at 9 kt, gusting 15 kt, visibility 10+ statute miles, overcast at 8,000 ft, temperature 24°C (76°F), altimeter 30.09 inHg. Conditions are Visual Flight Rules (VFR), ceiling 8,000 ft.
METAR KSFY 281915Z AUTO 20009G15KT 10SM OVC080 24/13 A3009 RMK AO2 T02440126
What changed at KSFY (nearest station)?
Since the 1855Z (1:55 PM CDT) report, compared automatically against the latest METAR.
- Gusts began, now gusting 15 kt.
- A ceiling formed at 8,000 ft.
Current pilot readout for 4LL3
Based on the nearest station (KSFY), 4LL3 is currently VFR with winds from 200° at 9 knots gusting 15, visibility 10+ statute miles, and a 8,000 ft ceiling. Density altitude is approximately 2,050 ft (field elevation 930 ft). 4LL3 does not publish a TAF. The nearest TAF station is KDBQ, about 33 nm away.
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.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| NFAV | 2,000 ft | TURF | 8 kt tail | 3 kt left (g5) |
| S | 2,000 ft | TURF | 8 kt tail | 3 kt left (g5) |
Open the crosswind calculator to try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 4→9 kt, ceiling unlimited → 8,000 ft.
4LL3 weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
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 4LL3
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
IOW UA /OV IOW/TM 1826/FL370/TP B738/TB NEG
IOW UAHeader: reporting station and UA: a routine pilot report.OV IOWLocation: fix or navaid, optionally with a radial and distance in NM.TM 1826Reported at 18:26 UTC.FL370Altitude: 37,000 ft MSL.TP B738Aircraft type reporting.TB NEGTurbulence: none reported.Show raw report
VYS UA /OV VYS/TM 1414/FL130/TP CRJ7/TB NEG
VYS UAHeader: reporting station and UA: a routine pilot report.OV VYSLocation: fix or navaid, optionally with a radial and distance in NM.TM 1414Reported at 14:14 UTC.FL130Altitude: 13,000 ft MSL.TP CRJ7Aircraft type reporting.TB NEGTurbulence: none reported.Show raw report
ORD UA /OV ORD/TM 1414/FL260/TP TBM9/TB NEG
ORD UAHeader: reporting station and UA: a routine pilot report.OV ORDLocation: fix or navaid, optionally with a radial and distance in NM.TM 1414Reported at 14:14 UTC.FL260Altitude: 26,000 ft MSL.TP TBM9Aircraft type reporting.TB NEGTurbulence: none reported.Show raw report
ARR UA /OV KARR/TM 1345/FL018/TP C172/WX FV07SM/RM VIS AT LEAST 7
ARR UAHeader: reporting station and UA: a routine pilot report.OV KARRLocation: fix or navaid, optionally with a radial and distance in NM.TM 1345Reported at 13:45 UTC.FL018Altitude: 1,800 ft MSL.TP C172Aircraft type reporting.WX FV07SMWeather and flight visibility observed.RM VIS AT LEAST 7Remarks.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at 4LL3
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KSFY reported mostly VFR across 72 observations, with 6 flight-category changes. The strongest gust reached 15 kt, the lowest ceiling was 8,000 ft. Wind most often came from the S.
Most recent change: MVFR → VFR
Most recent change: IFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- N/S
- 100%
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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
- 4LL3
- City
- Stockton
- State
- Illinois
- Country
- United States
- Elevation
- 930 ft
- Coordinates
- 42.3083, -89.9835
- Runways
- 2 physical runways · 2 runway ends
- Longest runway
- 2,000 ft
- Weather reporting
- Nearest station KSFY
- TAF
- Nearest KDBQ
- Time zone
- America/Chicago
- Sunset in
- 3h 39m
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Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
9 airports+3 more within 25 NM
25–50 NM
7 airports+1 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Freeport RC Modelers Club - Oppold / Blumendahl Rd. , Freeport, IL · 17 mi
- Cedarville Community Center , Cedarville, IL · 18 mi
Pilot PIREPs for John L Coppernoll Airport (4LL3)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for John L Coppernoll 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 4LL3 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.
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