Ralph Jacobs Airport (27LL) Area Aviation Weather & Runway Winds
Aviation weather near Ralph Jacobs Airport in Valmeyer, IL, decoded from the nearest reporting station (KCPS): conditions, runway crosswinds, and free Telegram airport alerts.
Ralph Jacobs Airport (27LL) is a general aviation airport serving pilots in and around Valmeyer, IL at 400 ft. 27LL has no weather station of its own. Conditions here are decoded from KCPS, about 14 nm away, the nearest reporting station, and local conditions can differ. Its 4 runways (10, 18, 28, 36), longest 2,350 ft, are checked against the current wind in the crosswind table below. The nearest TAF is issued for KCPS. Track it in the ATIS Alerts Telegram bot to get alerts read from KCPS, the station this page is based on.
No weather station at this airport: showing the nearest station KCPS, 14 nm away.
Wind from the north (010°) at 5 kt, visibility 10+ statute miles, no cloud data, temperature 23°C (74°F), altimeter 29.96 inHg. Conditions are Visual Flight Rules (VFR).
METAR KCPS 130653Z AUTO 01005KT 10SM CLR 23/21 A2996 RMK AO2 SLP142 T02330206 $
What changed at KCPS (nearest station)?
Since the 0553Z (12:53 AM CDT) report, compared automatically against the latest METAR.
No significant changes since the 0553Z report, conditions are holding steady.
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Current pilot readout for 27LL
Based on the nearest station (KCPS), 27LL is currently VFR with winds from 010° at 5 knots, visibility 10+ statute miles, and no ceiling reported. The strongest crosswind component is currently on runway 10, about 1 knots. Density altitude is approximately 1,450 ft (field elevation 400 ft). Review the latest TAF below for forecast changes before departure.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
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Track 27LL free on TelegramRunway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Use this section to quickly compare current wind alignment across available runways at 27LL. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 10FAV | 1,950 ft | TURF | 5 kt head | 1 kt right |
| 18 | 2,350 ft | TURF | 5 kt head | 1 kt right |
| 28 | 1,950 ft | TURF | 5 kt head | 1 kt right |
| 36 | 2,350 ft | TURF | 5 kt head | 1 kt right |
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 0→5 kt, ceiling unlimited → unlimited.
27LL weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Ralph Jacobs Airport in Valmeyer, IL: the NOAA/NWS NEXRAD composite updates about every five minutes, with NOAA lightning strike density overlaid. The loop plays the past 50 minutes, then continues into a future-radar forecast (+1 to +4 hours, NOAA HRRR model) so you can see where precipitation around 27LL is headed.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
Forecast frames (amber label) are HRRR model guidance, not observed radar. Lightning strike density appears as a blue-white glow when strikes are detected in view. Radar and lightning coverage are limited in parts of Alaska, Hawaii, and offshore areas. Not for navigation.
Pilot reports (PIREPs) within 100 NM of 27LL
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
ENL UA /OV ENL/TM 0250/FL360/TP A320/TB LGT/RM /ZKCFDC CW
ENL UAHeader: reporting station and UA: a routine pilot report.OV ENLLocation: fix or navaid, optionally with a radial and distance in NM.TM 0250Reported at 02:50 UTC.FL360Altitude: 36,000 ft MSL.TP A320Aircraft type reporting.TB LGTTurbulence: light.RM /ZKCFDC CWRemarks.Show raw report
ARP UAL1394 3832N 09104W 0209 F340 274/043KT TB CONT LGT TURB OCNL MOD IC
ARP UAL1394 3832N 09104W 020…Header: reporting station and UA: a routine pilot report.Show raw report
STL UA /OV STL/TM 0204/FL320/TP A320/TB CONS LGT/RM /ZKCFDC CW
STL UAHeader: reporting station and UA: a routine pilot report.OV STLLocation: fix or navaid, optionally with a radial and distance in NM.TM 0204Reported at 02:04 UTC.FL320Altitude: 32,000 ft MSL.TP A320Aircraft type reporting.TB CONS LGTTurbulence: continuous light.RM /ZKCFDC CWRemarks.Show raw report
STL UA /OV STL325010/TM 0157/FL350/TP B738/TB MOD CHOP/RM /ZKCFDC CW
STL UAHeader: reporting station and UA: a routine pilot report.OV STL325010Location: fix or navaid, optionally with a radial and distance in NM.TM 0157Reported at 01:57 UTC.FL350Altitude: 35,000 ft MSL.TP B738Aircraft type reporting.TB MOD CHOPTurbulence: moderate chop.RM /ZKCFDC CWRemarks.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at 27LL
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KCPS reported a mix of conditions, most often VFR across 47 observations, with 20 flight-category changes. The lowest ceiling was 200 ft. Wind most often came from the W.
Most recent change: MVFR → VFR
Most recent change: MVFR → VFR
- 10/18/28/36
- 100%
TAF | Terminal Aerodrome Forecast
Issued 0520Z (12:20 AM CDT)
TAF KCPS 130520Z 1306/1406 34003KT P6SM SCT250
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Nearby TFRs
Active FAA TFRs near 27LL
FAA TFR data shows an active temporary flight restriction near 27LL.
View all active US TFRs → · Official FAA TFR ↗
Verify with official FAA TFR sources before flight.
Airport facts
Reference data from the OurAirports dataset.
- Type
- General aviation airport
- FAA LID
- 27LL
- City
- Valmeyer
- State
- Illinois
- Country
- United States
- Elevation
- 400 ft
- Coordinates
- 38.3751, -90.3193
- Runways
- 4
- Longest runway
- 2,350 ft
- Weather reporting
- Nearest station KCPS
- TAF
- Nearest KCPS
- Time zone
- America/Chicago
- Next sunset
- 17h 0m
Run a flight school, FBO, or club here? Embed 27LL's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
8 airports+2 more within 25 NM
25–50 NM
8 airports+2 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.
- Columbia R/C Flying Club Inc - Bluff Rd , Columbia, IL · 6 mi
- Buder Park , Fenton, MO · 15 mi
- Buder Park , Fenton, MO · 15 mi
27LL weather: frequently asked
What runways are available at 27LL?+
27LL has 4 runways: 10, 18, 28, 36; the longest is 2,350 ft. This page computes the live crosswind for each runway end from the current wind.
Where does the weather shown for 27LL come from?+
Ralph Jacobs Airport does not have its own weather station. Conditions shown here come from the nearest reporting station, KCPS, about 14 nm away, close enough for situational awareness, but local conditions at 27LL can differ.
Does 27LL have a TAF?+
Yes. The KCPS TAF is shown on this page below the current conditions.
Does 27LL broadcast D-ATIS?+
No. 27LL does not broadcast D-ATIS. Alerts for 27LL from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.
Pilot PIREPs for Ralph Jacobs Airport (27LL)
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 Ralph Jacobs 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 27LL 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.
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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