Chester Wyss Airport

LL75 · Rock City, IL · 920 ft elevation

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: LL75
Coordinates: 42.4250, -89.4501
Elevation: 920 ft MSL

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

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	04:46 AM	09:46Z
Sunrise	05:21 AM	10:21Z
Sunset	08:38 PM	01:38Z
Evening civil twilight Loggable night begins	09:13 PM	02:13Z

Loggable night (§1.1)

09:13 PM → 04:46 AM

Night currency (§61.57)

09:38 PM → 04:21 AM

Plan a flight from LL75

Destination (ICAO)

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

Traffic pattern

Landing runway

LEFT traffic

Landing: Rwy N
Pattern: left (turns left)
TPA: 1,900 ft MSL (≈1,000 AGL)

Enter the left downwind for Rwy N at 1,900 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway N/S

1,900 ft × 100 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
N/S	1,900 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
RFD · Rockford	VOR-DME	110.80	r316° / 16.3 NM
JVL · Janesville	VOR-DME	114.30	r240° / 17.2 NM
PLL · Polo	VOR-DME	111.20	r004° / 27.8 NM

VFR sectional

Open LL75 on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for LL75. VFR sectional link above.

No published services or facility detail for LL75.

Nearby airports

IL23 · Ellis AirportPrivate (1 NM)IS93 · Sue Rock International AirportPrivate (3 NM)2IL1 · Mc Cartney AirportPrivate (5 NM)8IL5 · O'Connor FieldPrivate (5 NM)47IS · Flying Z Ranch AirportPrivate (6 NM)C86 · Freeport/Dornink Airport (6 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 LL75 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 LL75

Chester Wyss Airport (LL75) is an airport in Rock City, IL, at 920 ft MSL. It has 1 runway, the longest 1,900 ft. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for LL75, refreshed from the Aviation Weather Center and FAA NASR.

What is the longest runway at LL75?

Chester Wyss Airport has 1 runway; the longest is 1,900 ft. See the Runways tab for headings, surface, and lighting.

Where is LL75?

Chester Wyss Airport is in Rock City, IL, at an elevation of 920 ft MSL. Coordinates: 42.4250, -89.4501.

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