Clearwater Airpark Private
21OI · Batavia, OH · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:15 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:10 AM | 10:10Z |
| Sunrise | 06:39 AM | 10:39Z |
| Sunset | 08:45 PM | 00:45Z |
| Evening civil twilight Loggable night begins | 09:15 PM | 01:15Z |
Plan a flight from 21OI
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 17LEFT traffic
- Heading
- 174° mag · 170° true
- Dimensions
- 1,860 × 50 ft
- TPA
- 1,900 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
Enter the left downwind (heading 354°) on the 45° at 1,900 ft MSL (≈1,000 AGL).
More details — RWY 17
- Approach obstacle
- Pline, 30 ft, 200 ft from threshold
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 07/25 | 2,650 ft | |
| 17/35 | 1,860 ft | |
| H1/ | 100 ft |
Prefer one flat page? Full runway details for 21OI → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 21OI kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
MXQ 112.90 · CVG 117.30 · FLM 117.00
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| MXQ · Midwest | VOR/DME | 112.90 · 76X | Terminal | r221° / 22.6 NM |
| CVG · Cincinnati | TACAN | 117.30 · 120X | — | r081° / 29.2 NM |
| FLM · Falmouth | VOR/DME | 117.00 · 117X | High | r023° / 30.5 NM |
Prefer one flat list? All 21OI frequencies →
Charts & procedures
No published instrument procedures or Chart Supplement for 21OI — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 21OI
- Coordinates
- 39.1281, -84.0927
- Elevation
- 905 ft MSL
- Magnetic variation
- 4W
- Sectional chart
- CINCINNATI
- Airport use
- Private
- Control tower
- No
- ARTCC
- INDIANAPOLIS (ZID)
- Flight service (FSS)
- DAYTON · 122.1R · 1-800-WX-BRIEF
- Attendance
- MAY-SEP ALL DAWN-DUSK
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1984/06
- Distance from city
- 2 E
Ownership & management 2 contacts
Remarks FAA · 2 notes
General
- ULTRALIGHT ACTIVITY IN AREA.
- FOR CD CTC CINCINNATI APCH AT 859-372-6440
Nearby airports
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Also nearby: OI40 Hallelujah Field (private) (5 NM) · I69 Clermont County Airport (6 NM) · 66OH Old Boston Airport (private) (6 NM) · OH65 Hickory Grove Airpark (private) (7 NM) · OH66 Obannon Creek Aerodrome (private) (8 NM) · 1OA5 Double J Airport (9 NM)
About 21OI
Clearwater Airpark (21OI) is an airport in Batavia, OH, at 905 ft MSL. It has 3 runways, the longest 2,650 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 21OI, refreshed from the Aviation Weather Center and FAA NASR.
Does 21OI have a control tower?
No. Clearwater Airpark is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 21OI?
Clearwater Airpark has 3 runways; the longest is 2,650 ft. See the Runways section for headings, surface, and lighting.
Where is 21OI?
Clearwater Airpark is in Batavia, OH, at an elevation of 905 ft MSL. Coordinates: 39.1281, -84.0927.
Fly out of 21OI often?
Save 21OI 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.
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 21OI 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.