WxDecoder

1LL4 Weather Sies Landing Area Airport

Litchfield, IllinoisElevation 690 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KALN · 24 NM SW · 20 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 · KALN
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 16C. 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 49F, 1% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 49 S 1 kt – 1%
Monday Partly Sunny 76/48 SW 4 kt – 3%
Tuesday Mostly Cloudy 75/50 S 6 kt – 0%
Wednesday Sunny 78/53 S 7 kt – 0%
Thursday Sunny 82/54 S 7 kt – 4%
Friday Mostly Sunny 80/56 S 6 kt – 11%
Saturday Chance Rain Showers 75/56 S 7 kt – 70%
Sunday Chance Rain Showers 75 SW 7 kt – 38%

Source: National Weather Service (office LSX). Forecast issued 0209Z.

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 1LL4. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway

18/36
Dimensions
3,000 x 100 ft
Surface
Turf
RWY 18
RWY 36

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
690 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2306Z 6:06 PM
Sunrise
1219Z 7:19 AM
Loggable night
2333Z (6:33 PM local) → 1152Z (6:52 AM local)
end of evening to start of morning civil twilight
Position lights required
2306Z (6:06 PM local) → 1219Z (7:19 AM local)
sunset to sunrise (91.209)
Night passenger currency
0006Z (7:06 PM local) → 1119Z (6:19 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

Sies Landing Area Airport is in Litchfield, Illinois. Field elevation 690 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerGARY NORFLEET
Manager phone217-669-2158
AttendedIREG
CHARTS & AIRSPACE
ICAO / IATA1LL4
SectionalST LOUIS
Center (ARTCC)CHICAGO
Flight service (AFSS)SAINT LOUIS
RegionIllinois
CountryUnited States
Coordinates39.1832, -89.6973
Distance from city7 NM SW
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

1LL4 traffic patterns

2026-07-13 to 2026-07-13, 1 days observed · data 2026-10-23

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

Busiest day: Mon · Busiest month: Jul

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›B06 (Helicopter) · ~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

1LL4 has no on-field report. Nearest reporting station: KALN (24 NM SW, VFR).

KALN St Louis Regional Airport
24 NM SW
VFR
KBLV Scott AFB/Midamerica Airport
39 NM S
VFR
KSPI Abraham Lincoln Capital Airport
40 NM N
VFR
KSTL St. Louis Lambert International Airport
41 NM SW
VFR
KCPS St Louis Downtown Airport
43 NM SW
VFR
KIJX Jacksonville Municipal Airport
43 NM NW
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC CHAMPAIGN APCH AT 217-355-4069, WHEN APCH CLSD CTC CHICAGO ARTCC AT 630-906-8921
›PRVDD VFR OPNS AND PVT USE ONLY; INGRESS/EGRESS RTES MAINTAINED OBSTN FREE.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗1LL4 on OurAirports
FREQUENTLY ASKED
Does 1LL4 have a METAR?
No on-field METAR is issued for 1LL4. This page uses the nearest reporting station as a reference.
Does 1LL4 have a TAF?
No TAF is issued directly for 1LL4. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 1LL4?
1LL4 sits at 690 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 1LL4?
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.