WxDecoder

IS47 Weather Willis Airport

Sycamore, IllinoisElevation 856 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KARR · 19 NM SE · 56 min old
No ceiling, visibility 9 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KARR
WIND
Calm
no steady wind
VISIBILITY
9 SM
14.5 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 150° at 4 kt, visibility 10 SM, temperature 13.5C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 50F, 2% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Chance Rain Showers then Slight Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 50 SW 4 kt – 2%
Monday Patchy Fog then Mostly Cloudy 63/47 NE 13 kt – 3%
Tuesday Mostly Cloudy 67/54 SE 9 kt – 10%
Wednesday Mostly Sunny 71/56 S 9 kt – 16%
Thursday Chance Rain Showers then Slight Chance Showers And Thunderstorms 75/54 SW 9 kt – 30% Thunderstorms in the forecast
Friday Chance Rain Showers 73/56 SSE 9 kt – 39%
Saturday Chance Rain Showers 71/55 SSE 9 kt – 52%
Sunday Chance Rain Showers 69 SW 9 kt – 32%

Source: National Weather Service (office LOT). Forecast issued 0247Z.

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
Crosswind calculator
No runway layout is available for IS47. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
856 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2258Z 5:58 PM
Sunrise
1219Z 7:19 AM
Loggable night
2327Z (6:27 PM local) → 1151Z (6:51 AM local)
end of evening to start of morning civil twilight
Position lights required
2258Z (5:58 PM local) → 1219Z (7:19 AM local)
sunset to sunrise (91.209)
Night passenger currency
2358Z (6:58 PM local) → 1119Z (6:19 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

Willis Airport is in Sycamore, Illinois. Field elevation 856 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSmall airport
CHARTS & AIRSPACE
ICAO / IATAIS47
RegionIllinois
CountryUnited States
Coordinates42.0306, -88.7018
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

IS47 traffic patterns

2026-07-28 to 2026-10-20, 3 days observed · data 2026-10-23

Low confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
2
Operations trend (1 days)

Busiest day: Tue · Busiest month: Oct

FLEET MIX
Helicopter 67%Piston single 33%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›B06 (Helicopter) · ~1 landings/mo
›C172 (Piston single) · ~1 landings/mo
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

IS47 has no on-field report. Nearest reporting station: KARR (19 NM SE, VFR).

KARR Aurora Municipal Airport
19 NM SE
VFR
KRFD Chicago Rockford International Airport
20 NM NW
VFR
KDPA Dupage Airport
22 NM E
VFR
KORD Chicago O'Hare International Airport
36 NM E
VFR
KLOT Lewis University Airport
37 NM SE
VFR
KJVL Southern Wisconsin Regional Airport
38 NM NW
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗IS47 on OurAirports
FREQUENTLY ASKED
Does IS47 have a METAR?
No on-field METAR is issued for IS47. This page uses the nearest reporting station as a reference.
Does IS47 have a TAF?
No TAF is issued directly for IS47. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at IS47?
IS47 sits at 856 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for IS47?
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.