Airport information
- FAA LID
- WS91
- Coordinates
- 43.2086, -90.6637
- Elevation
- 707 ft MSL
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- GREEN BAY
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 2006/05
- Distance from city
- 5 ENE
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 | 04:47 AM | 09:47Z |
| Sunrise | 05:23 AM | 10:23Z |
| Sunset | 08:46 PM | 01:46Z |
| Evening civil twilight Loggable night begins | 09:22 PM | 02:22Z |
Plan a flight from WS91
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.8 — confirm the click sequence in the Chart Supplement
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 11
- Pattern
- left (turns left)
- TPA
- 1,700 ft MSL (≈1,000 AGL)
- CTAF
- 122.8
Enter the left downwind for Rwy 11 at 1,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 11/29
3,000 ft × 60 ft · Turf (Good)- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
- Traffic pattern
- Right
- Approach obstacle
- Pline, 30 ft, 600 ft from threshold
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 11/29 | 3,000 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| LNR · Lone Rock | VOR-DME | 112.80 | r258° / 23.8 NM |
| UKN · Waukon | VORTAC | 116.60 | r091° / 38.5 NM |
VFR sectional
No published instrument procedures or Chart Supplement for WS91. VFR sectional link above.
Ownership & management
Remarks FAA
- PRVDD MONITOR FREQ OF BOSCOBEL MUNI, LETTER OF AGREEMENT WITH BOSCOBEL MUNI, VFR OPNS ONLY, CLEAR 20:1 APCHS, RGT TFC RY 29 & ALL TFC REMAIN N OF SKY HOLLOW ARPT.
- AND CRAWFORD COUNTY.
- ALL TFC ARR/DEP SKY HOLLOW WILL CONTINUOUSLY MONITOR BOSCOBEL MUNI ARPT CTAF 122.8.
- ALL TFC AT SKY HOLLOW SHALL REMAIN N OF SKY HOLLOW ARPT.
- FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
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 WS91 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 WS91
Sky Hollow Airport (WS91) is an airport in Boscobel, WI, at 707 ft MSL. It has 1 runway, the longest 3,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for WS91, refreshed from the Aviation Weather Center and FAA NASR.
Does WS91 have a control tower?
No. Sky Hollow Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at WS91?
Sky Hollow Airport has 1 runway; the longest is 3,000 ft. See the Runways tab for headings, surface, and lighting.
Where is WS91?
Sky Hollow Airport is in Boscobel, WI, at an elevation of 707 ft MSL. Coordinates: 43.2086, -90.6637.
Fly out of WS91 often?
Save WS91 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.