Gillen Airport

36IS · Monmouth, IL · 750 ft elevation

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: 36IS
Coordinates: 40.9264, -90.7312
Elevation: 750 ft MSL

Detailed FAA facility data isn't available for this airport.

Weather

METAR observed

Loading current weather…

TAF forecast

Loading forecast…

Sun & FAA night 2026-06-21

Event	Local (CDT)	UTC
Morning civil twilight Loggable night ends	04:57 AM	09:57Z
Sunrise	05:31 AM	10:31Z
Sunset	08:38 PM	01:38Z
Evening civil twilight Loggable night begins	09:12 PM	02:12Z

Loggable night (§1.1)

09:12 PM → 04:57 AM

Night currency (§61.57)

09:38 PM → 04:31 AM

Plan a flight from 36IS

Destination (ICAO)

TAS (kt)Burn (gph)Reserve (hr)Wind from (°)Wind (kt)

Traffic pattern

Landing runway

LEFT traffic

Landing: Rwy 18
Pattern: left (turns left)
TPA: 1,800 ft MSL (≈1,000 AGL)

Enter the left downwind for Rwy 18 at 1,800 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway 18/36

2,300 ft × 70 ft · TURF

Heading: n/a

Heading: n/a

Headings shown are true (magnetic variation unavailable).

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
18/36	2,300 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
GBG · Galesburg	VOR-DME	109.80	r264° / 13.5 NM
BRL · Burlington	VORTAC	111.40	r031° / 15.1 NM
MZV · Moline	VORTAC	114.40	r185° / 24.1 NM
DDD · Port City	VOR-DME	116.50	r143° / 32.5 NM

VFR sectional

Open 36IS on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for 36IS. VFR sectional link above.

No published services or facility detail for 36IS.

Nearby airports

IL65 · M.A.M Trail AirportPrivate (4 NM)C66 · Monmouth Municipal Airport (5 NM)60IL · Beulah Land Farm AirportPrivate (6 NM)3IS2 · Earp Airport (12 NM)KGBG · Galesburg Municipal Airport (14 NM)IL01 · Wolford's AirportPrivate (16 NM)

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 36IS 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 36IS

Gillen Airport (36IS) is an airport in Monmouth, IL, at 750 ft MSL. It has 1 runway, the longest 2,300 ft. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 36IS, refreshed from the Aviation Weather Center and FAA NASR.

What is the longest runway at 36IS?

Gillen Airport has 1 runway; the longest is 2,300 ft. See the Runways tab for headings, surface, and lighting.

Where is 36IS?

Gillen Airport is in Monmouth, IL, at an elevation of 750 ft MSL. Coordinates: 40.9264, -90.7312.

Fly out of 36IS often?

Save 36IS 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.

Get the appBeta