WxDecoder

91C Weather Sauk-Prairie Airport

Prairie Du Sac, WisconsinElevation 832 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KLNR · 19 NM W · 45 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KLNR
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 330° at 6 kt, visibility 10 SM, temperature 15.5C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 48F, 5% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Showers And Thunderstorms Likely. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 48 N 4 kt – 5%
Monday Mostly Cloudy 58/44 NE 9 kt – 10%
Tuesday Partly Sunny 68/53 SE 9 kt – 17%
Wednesday Slight Chance Rain Showers then Mostly Sunny 72/55 S 9 kt – 61%
Thursday Showers And Thunderstorms Likely 72/50 SW 4 kt – 61% Thunderstorms in the forecast
Friday Chance Rain Showers 70/53 SE 4 kt – 52%
Saturday Chance Rain Showers 68/52 SE 4 kt – 52%
Sunday Chance Rain Showers 66 W 4 kt – 31%

Source: National Weather Service (office MKX). Forecast issued 0141Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
1 runway
NESW1836
WIND
No on-field weather data
No reporting weather station on the field, so wind components cannot be computed. See nearby stations below.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,936 ft

18/36
Dimensions
2,936 x 60 ft
Surface
Asphalt (good)
Edge lights
MED
RWY 18177°T
REILYes
VGSIPAPI (P2L)
Traffic patternLeft
RWY 36357°T
REILYes
VGSIPAPI (P2L)
Traffic patternLeft

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
832 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2300Z 6:00 PM
Sunrise
1226Z 7:26 AM
Loggable night
2329Z (6:29 PM local) → 1156Z (6:56 AM local)
end of evening to start of morning civil twilight
Position lights required
2300Z (6:00 PM local) → 1226Z (7:26 AM local)
sunset to sunrise (91.209)
Night passenger currency
0000Z (7:00 PM local) → 1126Z (6:26 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Sauk-Prairie Airport is in Prairie Du Sac, Wisconsin. Field elevation 832 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UseOpen to the public
TypeSmall airport
ManagerSAUK PRAIRIE AIRPORT INC.
Manager phone608-577-3754
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATA91C
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)GREEN BAY
RegionWisconsin
CountryUnited States
Coordinates43.2979, -89.7558
Distance from city2 NM W
SERVICES & LIGHTING
Fuel100LL · UL94
Control towerNon-towered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF122.900
FREQUENCIES

Communications

122.900
CTAF
CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

91C traffic patterns

2026-06-12 to 2026-10-23, 68 days observed · data 2026-10-23

High confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
9.1
AVG OPS/DAY
13.6
Activity trend over 18 days: falling, from 17 to 6 operations per dayOperations trend (18 days)

Busiest day: Tue · Busiest month: Jun

FLEET MIX
Piston single 60%Unknown 30%Helicopter 6%Turboprop 3%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›C172 (Piston single) · ~37 landings/mo
›C152 (Piston single) · ~16 landings/mo
›MM24 (Unknown) · ~15 landings/mo
›P28A (Piston single) · ~12 landings/mo
›C77R (Unknown) · ~10 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly single-engine piston aircraft.

›C172 (Piston single)
›C77R (Unknown)
›C152 (Piston single)
›MM24 (Unknown)
›P28A (Piston single)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

91C has no on-field report. Nearest reporting station: KLNR (19 NM W, VFR).

KLNR Tri-County Regional Airport
19 NM W
VFR
KMSN Dane County Regional Truax Field
21 NM SE
VFR
KVOK Volk Field
44 NM NW
VFR
KUNU Dodge County Airport
47 NM E
VFR
KJVL Southern Wisconsin Regional Airport
51 NM SE
VFR
KCMY Sparta Fort McCoy Airport
58 NM NW
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC MADISON APP/DEP CON AT 608-249-8240. WHEN MADISON APCH CLSD, FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
›ULTRALIGHT ACTVTY ON & INVOF ARPT.
›TKOFS & LDGS ARE PROHIBITED ON UNPAVED SFCS.
›24 HR SELF SVC FUEL AVBL WITH CREDIT CARD.
›ACTVT MIRL RY 18/36, REIL RYS 18 & 36, & PAPI RYS 18 & 36 - CTAF.
›AVOID HOSPITAL/HELIPAD 3,000 FT SOUTHEAST OF RY 36 THLD.
›MAINT VEHICLE TFC ON AND INVOF ARPT.
›RY 18 DEPS CLIMB TO 1,800 FT MSL ON RY HEADING BFR TURNING EAST/SOUTHEAST.
›W RAMP AND TWY PVT, CLSD TSNT.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗91C on OurAirports
FREQUENTLY ASKED
Does 91C have a METAR?
No on-field METAR is issued for 91C. This page uses the nearest reporting station as a reference.
Does 91C have a TAF?
No TAF is issued directly for 91C. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 91C?
91C sits at 832 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 91C?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.