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Otterbach Farm Airport (81LL) Area Aviation Weather & Runway Winds

As of 10:35 AM CDT, Oct 27, based on the nearest station (KVYS), 81LL is currently VFR with winds from 170° at 6 knots, visibility 10+ statute miles, and no ceiling reported.

Aviation weather near Otterbach Farm Airport in Mendota, IL, decoded from the nearest reporting station (KVYS): conditions and runway crosswinds.

Otterbach Farm Airport (81LL) is a general aviation airport serving pilots in and around Mendota, IL at a field elevation of 840 ft. 81LL has no weather station of its own. Conditions here are decoded from KVYS, about 13 nm away, the nearest reporting station, and local conditions can differ. It has 2 physical runways (NW, SE), the longest 1,600 ft. The nearest TAF is issued for KRFD.

Ask ATIS AIAsk anything about 81LL's weather, runways or delays, or search another airport.
VFR
Observed 1535Z (10:35 AM CDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KVYS, 13.3 nm away.

Wind
170° 6 kt
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
30.26"
Temp / Dew
-

Wind from the south (170°) at 6 kt, visibility 10+ statute miles, no cloud data, altimeter 30.26 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KVYS 271535Z AUTO 17006KT 10SM CLR A3026 RMK AO2

Current pilot readout for 81LL

Based on the nearest station (KVYS), 81LL is currently VFR with winds from 170° at 6 knots, visibility 10+ statute miles, and no ceiling reported. 81LL does not publish a TAF. The nearest TAF station is KRFD, about 38 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.

RunwayHead / TailCrosswind
NWFAV6 kt tail1 kt right
SE6 kt tail1 kt right

Open the crosswind calculator to try your own wind and runway numbers →

81LL weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.

Loading…
Loading radar…

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 81LL

Reported by pilots in flight over the past 6 hours, via aviationweather.gov.

PIREP2119Z (4:19 PM CDT) · 85 NM NW of 81LL · 14,000 ft MSL · SW3
moderate turbulence
Show raw report
DBQ UA /OV DBQ/TM 2119/FL140/TP SW3/TB MOD
DBQ UAHeader: reporting station and UA: a routine pilot report.
OV DBQLocation: fix or navaid, optionally with a radial and distance in NM.
TM 2119Reported at 21:19 UTC.
FL140Altitude: 14,000 ft MSL.
TP SW3Aircraft type reporting.
TB MODTurbulence: moderate.
PIREP2030Z (3:30 PM CDT) · 52 NM NE of 81LL · 33,000 ft MSL · B712
continuous light chop turbulence
Show raw report
JOT UA /OV JOT020025/TM 2030/FL330/TP B712/TB CONS LGT CHOP
JOT UAHeader: reporting station and UA: a routine pilot report.
OV JOT020025Location: fix or navaid, optionally with a radial and distance in NM.
TM 2030Reported at 20:30 UTC.
FL330Altitude: 33,000 ft MSL.
TP B712Aircraft type reporting.
TB CONS LGT CHOPTurbulence: continuous light chop.
PIREP2024Z (3:24 PM CDT) · 72 NM E of 81LL · 40,000 ft MSL · G150
Show raw report
IGQ UA /OV CGT/TM 2024/FL400/TP G150/TB NEG
IGQ UAHeader: reporting station and UA: a routine pilot report.
OV CGTLocation: fix or navaid, optionally with a radial and distance in NM.
TM 2024Reported at 20:24 UTC.
FL400Altitude: 40,000 ft MSL.
TP G150Aircraft type reporting.
TB NEGTurbulence: none reported.
PIREP2018Z (3:18 PM CDT) · 13 NM S of 81LL · during descent · E170
light rime fl220-190 icing
Show raw report
VYS UA /OV VYS/TM 2018/FL220/TP E170/TA M15/IC LGT RIME FL220-190/RM DURD SHAIN2
VYS UAHeader: reporting station and UA: a routine pilot report.
OV VYSLocation: fix or navaid, optionally with a radial and distance in NM.
TM 2018Reported at 20:18 UTC.
FL220Altitude: 22,000 ft MSL.
TP E170Aircraft type reporting.
TA M15Outside air temperature, °C.
IC LGT RIME FL220-190Icing: light rime fl220-190.
RM DURD SHAIN2Remarks.
PIREP1959Z (2:59 PM CDT) · 97 NM NW of 81LL · 14,000 ft MSL · C421
continuous light turbulence
Show raw report
DBQ UA /OV DBQ360020/TM 1959/FL140/TP C421/TB CONS LGT
DBQ UAHeader: reporting station and UA: a routine pilot report.
OV DBQ360020Location: fix or navaid, optionally with a radial and distance in NM.
TM 1959Reported at 19:59 UTC.
FL140Altitude: 14,000 ft MSL.
TP C421Aircraft type reporting.
TB CONS LGTTurbulence: continuous light.
PIREP1920Z (2:20 PM CDT) · 96 NM E of 81LL · 33,000 ft MSL · LJ31
occasional light chop turbulence
Show raw report
ORD UA /OV ORD090036/TM 1920/FL330/TP LJ31/TB OCNL LGT CHOP
ORD UAHeader: reporting station and UA: a routine pilot report.
OV ORD090036Location: fix or navaid, optionally with a radial and distance in NM.
TM 1920Reported at 19:20 UTC.
FL330Altitude: 33,000 ft MSL.
TP LJ31Aircraft type reporting.
TB OCNL LGT CHOPTurbulence: occasional light chop.
PIREP1920Z (2:20 PM CDT) · 10 NM NE of 81LL · 24,000 ft MSL · C68A
light mx icing
Show raw report
JOT UA /OV JOT280030/TM 1920/FL240/TP C68A/TA M28/IC LGT MX
JOT UAHeader: reporting station and UA: a routine pilot report.
OV JOT280030Location: fix or navaid, optionally with a radial and distance in NM.
TM 1920Reported at 19:20 UTC.
FL240Altitude: 24,000 ft MSL.
TP C68AAircraft type reporting.
TA M28Outside air temperature, °C.
IC LGT MXIcing: light mx.
PIREP1918Z (2:18 PM CDT) · 38 NM E of 81LL · 37,000 ft MSL · A21N
Show raw report
JOT UA /OV JOT/TM 1918/FL370/TP A21N/TB NEG
JOT UAHeader: reporting station and UA: a routine pilot report.
OV JOTLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1918Reported at 19:18 UTC.
FL370Altitude: 37,000 ft MSL.
TP A21NAircraft type reporting.
TB NEGTurbulence: none reported.

⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.

Recent aviation weather trends at 81LL

From ATIS Alerts' hourly weather history.

Last 24 hours

History is still being collected. Check back in a few days.

Last 7 days
VFR 100%
Wind avg/max: 3/6 kt
Max gust: -
Lowest ceiling: -
Lowest vis: 10 sm
Prevailing wind: S
Category changes: 0
Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

NW/SE
100%

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Field aerial

North up

Aerial photo of Otterbach Farm Airport (81LL)
N ↑

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

From the FAA airport record (cycle 2026-10-01) and OurAirports.

Services

Attended
Unattended
Control tower
None

Airport

Type
General aviation airport
FAA LID
81LL
City
Mendota
State
Illinois
Country
United States
Elevation
840 ft
Coordinates
41.5723, -89.1714
Runways
2 physical runways · 2 runway ends
Longest runway
1,600 ft
Weather reporting
Nearest station KVYS
TAF
Nearest KRFD
Time zone
America/Chicago
Sunset in
1h 21m

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Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

VFRMVFRIFRLIFRNo report

RC flying fields nearby

AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.

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Pilot PIREPs for Otterbach Farm Airport (81LL)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Otterbach Farm 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 81LL 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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