1
Runway
0
Frequencies
0
Procedures
0
NOTAMs
Quick Facts
ICAO
36IS
FAA
36IS
Elevation
750 ft MSL
Runways
1
Frequencies
0
Tower
No
Fuel
N/A
Coordinates
40.926, -90.731
Airport Information
Facility Type
AIRPORT
Elevation
750 ft MSL
Control Tower
No
Fuel Types
None listed
Coordinates
40.9264, -90.7312
Current Weather
METAR KGBG 131435Z AUTO 33014KT 10SM CLR 15/06 A3006 RMK AO2 T01500056
Flight Category
VFR
Wind
330° at 14 kt
Visibility
10+ SM
Temperature
15°C
Dewpoint
5.6°C
Altimeter
1018.00 inHg
Cloud Cover
CLR
Nearest weather from KGBG (18 NM away)
Observed 2026-05-13 14:35Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 18/36 | 2,300 ft | 70 ft | TURF | - |
Active NOTAMs
No active NOTAMs for 36IS.
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Illinois airports
36IS Operational Overview
Location & Facility
Gillen Airport (36IS) is a airport located in Monmouth, Illinois, United States. The field sits at an elevation of 750 feet above mean sea level (MSL) at coordinates 40.9264°N, 90.7312°W.
Runways
Gillen Airport has 1 runway. The longest runway (18/36) measures 2,300 feet by 70 feet with a turf surface.
Communications & Operations
Gillen Airport is a non-towered (pilot-controlled) field.
Current Conditions
The current flight category at Gillen Airport is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations.
Frequently Asked Questions
What is 36IS?
36IS is the ICAO identifier for Gillen Airport, a public-use airport located in Monmouth, Illinois, United States.
How many runways does Gillen Airport have?
Gillen Airport (36IS) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of 36IS?
The field elevation of Gillen Airport is 750 feet above mean sea level (MSL).
Is fuel available at 36IS?
No fuel types are currently listed for Gillen Airport. Contact the FBO directly for availability.
What are the current weather conditions at 36IS?
The current flight category at Gillen Airport is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at 36IS?
There are currently no active NOTAMs for Gillen Airport.
How do I access complete data for 36IS?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Gillen Airport.
Where is Gillen Airport located?
Gillen Airport (36IS) is located in Monmouth, Illinois, United States, at an elevation of 750 ft MSL.