Airport information
- FAA LID
- M21
- Coordinates
- 37.2260, -87.1570
- Elevation
- 422 ft MSL
- Magnetic variation
- 3W
- Sectional chart
- ST LOUIS
- Airport use
- Public
- Control tower
- No
- ARTCC
- MEMPHIS (ZME)
- Flight service (FSS)
- LOUISVILLE
- NOTAM facility
- LOU
- Attendance
- MON-FRI 0800-1700
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1960/11
- Distance from city
- 2 NE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:58 AM | 09:58Z |
| Sunrise | 05:29 AM | 10:29Z |
| Sunset | 08:12 PM | 01:12Z |
| Evening civil twilight Loggable night begins | 08:43 PM | 01:43Z |
Plan a flight from M21
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REIL RWY 06 & 24; PAPI RWY 06 & 24; MIRL RWY 06/24 - CTAF. on 123.0 — Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 05 · 059°
- Pattern
- left (turns left)
- TPA
- 1,400 ft MSL (≈1,000 AGL)
- CTAF
- 123.0
Enter the left downwind for Rwy 05 at 1,400 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 05/23
5,000 ft × 75 ft · ASP- Heading
- 059° mag · 56° true
- Heading
- 239° mag · 236° true
| Runway | Length | Your margin |
|---|---|---|
| 05/23 | 5,000 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| A/D | 126.4 | EVANSVILLE APP/DEP |
| AWOS | 120.375 | AWOS 3 |
| UNIC | 123 | CTAF/UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| CCT · Central City | VORTAC | 109.80 | r152° / 10.7 NM |
| OWB · Owensboro | VOR-DME | 108.60 | r178° / 31.1 NM |
| HXW · Screaming Eagle | TACAN | 114.90 | r027° / 36.7 NM |
| CKV · Clarksville | VOR-DME | 110.60 | r020° / 38.3 NM |
| BWG · Bowling Green | VORTAC | 117.90 | r296° / 38.6 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A (additive)
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Air ambulance
Ownership & management
Remarks FAA
- EXISTED PRIOR TO 1959.
- FOR CD CTC CAMPBELL APCH AT 270-798-6441.
- ACTVT REIL RWY 06 & 24; PAPI RWY 06 & 24; MIRL RWY 06/24 - CTAF.
- AFT HR - AMGR.
- FUEL AVBL H24 WITH CREDIT CARD.
- 27:1 AT DSPLCD THR.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open M21 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About M21
Muhlenberg County Airport (M21) is an airport in Greenville, KY, at 422 ft MSL. It has 1 runway, the longest 5,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for M21, refreshed from the Aviation Weather Center and FAA NASR.
Does M21 have a control tower?
No. Muhlenberg County Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at M21?
Muhlenberg County Airport has 1 runway; the longest is 5,000 ft. See the Runways tab for headings, surface, and lighting.
Where is M21?
Muhlenberg County Airport is in Greenville, KY, at an elevation of 422 ft MSL. Coordinates: 37.2260, -87.1570.
Fly out of M21 often?
Save M21 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.