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Clark Airport

23IS · Plymouth, IL · 570 ft elevation

Airport information

FAA LID
23IS
Coordinates
40.3257, -90.8276
Elevation
570 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 2026-06-20

EventLocal (CDT)UTC
Morning civil twilight
Loggable night ends
05:00 AM10:00Z
Sunrise05:33 AM10:33Z
Sunset08:36 PM01:36Z
Evening civil twilight
Loggable night begins
09:10 PM02:10Z
Loggable night (§1.1)
09:10 PM → 05:00 AM
Night currency (§61.57)
09:36 PM → 04:33 AM

Plan a flight from 23IS

Runway E/W

1,600 ft × 70 ft · TURF
E
Heading
n/a
W
Heading
n/a

Headings shown are true (magnetic variation unavailable).

Nearby navigation aids

NavAidTypeFreqRadial / Dist magnetic
BRL · BurlingtonVORTAC111.40r164° / 24.3 NM
UIN · QuincyVORTAC113.60r031° / 35.4 NM

No published instrument procedures or Chart Supplement for 23IS. VFR sectional link above.

No published services or facility detail for 23IS.

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 23IS in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator.