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
- Attendance
- MAY-SEP ALL DAWN-DUSK
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1984/06
- Distance from city
- 2 E
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:38 AM | 09:38Z |
| Sunrise | 06:10 AM | 10:10Z |
| Sunset | 09:06 PM | 01:06Z |
| Evening civil twilight Loggable night begins | 09:38 PM | 01:38Z |
Plan a flight from 21OI
Traffic pattern
- Landing
- Rwy 07
- Pattern
- left (turns left)
- TPA
- 1,900 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy 07 at 1,900 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 07/25
2,650 ft × 30 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Pline, 34 ft
- Heading
- n/a
- Traffic pattern
- Left
Runway 17/35
1,860 ft × 50 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Pline, 30 ft, 200 ft from threshold
- Heading
- n/a
- Traffic pattern
- Left
Runway H1/
100 ft × 100 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
| Runway | Length | Your margin |
|---|---|---|
| 07/25 | 2,650 ft | |
| 17/35 | 1,860 ft | |
| H1/ | 100 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| MXQ · Midwest | VOR-DME | 112.90 | r221° / 22.6 NM |
| CVG · Cincinnati | VORTAC | 117.30 | r081° / 29.2 NM |
| FLM · Falmouth | VOR-DME | 117.00 | r023° / 30.5 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 21OI. VFR sectional link above.
Ownership & management
Remarks FAA
- HELIPORT DETERMINATION; CONDITIONAL; APP/DEP TO HELIPAD IS IN AREA 60-270 DEGS; AREA IS APPROPRIATELY MARKED; WIND INDICATOR IS MAINTAINED.
- ULTRALIGHT ACTIVITY IN AREA.
- FOR CD CTC CINCINNATI APCH AT 859-372-6440
Nearby airports
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.
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 on the Comms & NavAids tab.
What is the longest runway at 21OI?
Clearwater Airpark has 3 runways; the longest is 2,650 ft. See the Runways tab 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.