1
Runway
3
Frequencies
4
Procedures
2
NOTAMs
Quick Facts
ICAO
KM21
FAA
M21
Elevation
422 ft MSL
Runways
1
Frequencies
3
Tower
No
Fuel
100LL,A+
Coordinates
37.226, -87.157
Airport Information
Facility Type
AIRPORT
Elevation
422 ft MSL
Control Tower
No
Fuel Types
100LL,A+
ARTCC
MEMPHIS
Coordinates
37.2260, -87.1570
Ownership
Public
Hours of Operation
Current Weather
METAR KM21 132115Z AUTO 30009G19KT 10SM CLR 25/02 A2994 RMK AO2 T02540021
Flight Category
VFR
Wind
300° at 9 kt G19
Visibility
10+ SM
Temperature
25.4°C
Dewpoint
2.1°C
Altimeter
1014.00 inHg
Cloud Cover
CLR
Observed 2026-05-13 21:15Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 05/23 | 5,000 ft | 75 ft | ASP | - |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| A/D | 126.4 | EVANSVILLE APP/DEP |
| ATIS | 120.375 | AWOS 3 |
| UNIC | 123 | CTAF/UNICOM |
Active NOTAMs
M21 26/156
2026-05-12 15:05 – 2026-05-20 17:00
M21 26/143
2026-05-11 17:54 – 2026-06-25 17:54
IFR Procedures
2 Runway, 2 Approaches
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Kentucky airports
KM21 Operational Overview
Location & Facility
Muhlenberg County Airport (KM21) is a publicly owned airport open to the public located in Greenville, Kentucky, United States. The field sits at an elevation of 422 feet above mean sea level (MSL) at coordinates 37.2260°N, 87.1570°W.
Runways
Muhlenberg County Airport has 1 runway. The longest runway (05/23) measures 5,000 feet by 75 feet with a asp surface.
Communications & Operations
Muhlenberg County Airport is a non-towered (pilot-controlled) field. ATIS is available on 120.375 MHz. A total of 3 communication frequencies are published for this facility.
Services & Fuel
Muhlenberg County Airport offers 100LL,A+ fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Instrument Procedures
Muhlenberg County Airport has 4 published instrument flight procedures, including 2 approaches. These procedures are updated on the 28-day AIRAC cycle. Sign up for AeroCopilot to view full procedure charts with waypoint maps and altitude profiles.
Current Conditions
The current flight category at Muhlenberg County Airport is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There are currently 2 active NOTAMs for this facility.
Frequently Asked Questions
What is KM21?
KM21 is the ICAO identifier for Muhlenberg County Airport, a public-use airport located in Greenville, Kentucky, United States.
How many runways does Muhlenberg County Airport have?
Muhlenberg County Airport (KM21) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of KM21?
The field elevation of Muhlenberg County Airport is 422 feet above mean sea level (MSL).
Is fuel available at KM21?
Yes, Muhlenberg County Airport offers 100LL,A+ fuel.
What are the current weather conditions at KM21?
The current flight category at Muhlenberg County Airport is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at KM21?
There are currently 2 active NOTAMs for Muhlenberg County Airport. Sign up for AeroCopilot to read decoded NOTAM text and AI interpretations.
How do I access complete data for KM21?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Muhlenberg County Airport.
Where is Muhlenberg County Airport located?
Muhlenberg County Airport (KM21) is located in Greenville, Kentucky, United States, at an elevation of 422 ft MSL.