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The Pilots Desk
Small airport

Clark Airport

ICAO 23IS🇺🇸 Plymouth
Coordinates
40.3257°N, 90.8276°W
Elevation
570 ft (174 m)
Type
Small airport
Region
US-IL
Time zone
Chicago(UTC-05:00)
Magnetic variation
1.7° W

Daylight today(Jul 16, 2026, local time)

Civil dawn
05:15
Sunrise
05:47
Sunset
20:32
Civil dusk
21:04

About 14h 45m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.

About Clark Airport

Clark Airport is a small airport in Plymouth, United States. It sits at an elevation of 570 ft (174 m) and has 1 runway, the longest 1,600 ft / 488 m. It observes America/Chicago local time. The nearest airport is Mc Pherson Airport (5IS9), about 10.2 nm to the w.

Summary generated from this airport’s structured data — reference only.

Map

Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.

Runways (1)

RunwayLengthWidthSurfaceLightingStatus
E / W1,600 ft / 488 m70 ftTurfUnlitOpen

Airspace in this area(1)

NameClassTypeFloorCeiling
HOWARD EAST 0700-2200 SUN-SAT & BY NOTAMSpecial useDanger9000 ft MSLFL180

Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.

Nearby airports

Great-circle distance and true bearing from Clark Airport.

Live tracking (FR24) Open in Maps
🇺🇸 More airports in United States📘 Flying in the United States: a pilot's guide

Frequently asked questions

Where is Clark Airport located?

Clark Airport is small airport located in Plymouth, United States, at an elevation of 570 ft (174 m).

How many runways does Clark Airport have?

Clark Airport has 1 runway, the longest being 1,600 ft / 488 m.

What time zone is Clark Airport in?

Clark Airport is in the America/Chicago time zone (UTC-05:00).

What is the magnetic variation at Clark Airport?

The magnetic variation (declination) at Clark Airport is approximately 1.7° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.

What airports are near Clark Airport?

The nearest airport to Clark Airport is Mc Pherson Airport (5IS9), about 10.2 nm to the w, followed by Smith Airport and Macomb Municipal Airport.

Is the information on this page suitable for flight planning?

No. Clark Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.