1
Runway
3
Frequencies
4
Procedures
6
NOTAMs
Quick Facts
ICAO
KM21
FAA
M21
Elevation
428.2 ft MSL
Runways
1
Frequencies
3
Tower
No
Fuel
100LL,A+
Coordinates
37.226, -87.156
Airport Information
Facility Type
AIRPORT
Elevation
428.2 ft MSL
Control Tower
No
Fuel Types
100LL,A+
ARTCC
MEMPHIS
Coordinates
37.2262, -87.1564
Ownership
Public
Hours of Operation
Current Weather
METAR KM21 280215Z AUTO 00000KT 10SM BKN007 23/23 A2995 RMK AO2 T02300230
Flight Category
IFR
Wind
0° at 0 kt
Visibility
10+ SM
Temperature
23°C
Dewpoint
23°C
Altimeter
1014.30 inHg
Cloud Cover
BKN
Observed 2026-06-28 02:15Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 06/24 | 4,999 ft | 75 ft | ASPH | MED |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| A/D | 126.4 | EVANSVILLE APP/DEP |
| ATIS | 120.375 | AWOS 3 |
| UNIC | 123 | CTAF/UNICOM |
Active NOTAMs
IFR Procedures
2 Runway, 2 Approaches
Nearby Airports in Kentucky
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Kentucky airports
KM21 Operational Overview
Location & Facility
MUHLENBERG COUNTY (KM21) is a publicly owned airport open to the public located in GREENVILLE, Kentucky, United States. The field sits at an elevation of 428.2 feet above mean sea level (MSL) at coordinates 37.2262°N, 87.1564°W.
Runways
MUHLENBERG COUNTY has 1 runway. The longest runway (06/24) measures 4,999 feet by 75 feet with a asph surface.
Communications & Operations
MUHLENBERG COUNTY 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 offers 100LL,A+ fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Instrument Procedures
MUHLENBERG COUNTY 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 is IFR (Instrument Flight Rules — instrument approach required). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There are currently 6 active NOTAMs for this facility.
Frequently Asked Questions
What is KM21?
KM21 is the ICAO identifier for MUHLENBERG COUNTY, a public-use airport located in GREENVILLE, Kentucky, United States.
How many runways does MUHLENBERG COUNTY have?
MUHLENBERG COUNTY (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 is 428.2 feet above mean sea level (MSL).
Is fuel available at KM21?
Yes, MUHLENBERG COUNTY offers 100LL,A+ fuel.
What are the current weather conditions at KM21?
The current flight category at MUHLENBERG COUNTY is IFR. 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 6 active NOTAMs for MUHLENBERG COUNTY. 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.
Where is MUHLENBERG COUNTY located?
MUHLENBERG COUNTY (KM21) is located in GREENVILLE, Kentucky, United States, at an elevation of 428.2 ft MSL.