WxDecoder

IS94 Weather Johnson Airport

Sandwich, IllinoisElevation 667 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KARR · 13 NM NE · 21 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 · KARR
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 calm, visibility 10 SM, temperature 13C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 50F, 1% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 50 SSE 4 kt – 1%
Monday Patchy Fog then Mostly Cloudy 67/48 NE 9 kt 17 kt 3%
Tuesday Mostly Cloudy 70/54 SE 9 kt – 10%
Wednesday Mostly Sunny 72/56 S 9 kt – 11%
Thursday Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 77/55 SW 9 kt – 29% Thunderstorms in the forecast
Friday Chance Rain Showers 76/56 SSE 9 kt – 33%
Saturday Chance Rain Showers 72/56 S 9 kt – 52%
Sunday Chance Rain Showers 70 SW 9 kt – 36%

Source: National Weather Service (office LOT). Forecast issued 0113Z.

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 IS94. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail

09/27
Dimensions
1,800 x 50 ft
Surface
TURF
FIELD CONDITIONS

Field elevation

Field elevation
667 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) → 1150Z (6:50 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

Johnson Airport is in Sandwich, Illinois. Field elevation 667 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSmall airport
CHARTS & AIRSPACE
ICAO / IATAIS94
RegionIllinois
CountryUnited States
Coordinates41.6056, -88.6612
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

IS94 traffic patterns

2026-07-24 to 2026-07-24, 1 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
3
AVG OPS/DAY
5
Operations trend (1 days)

Busiest day: Fri · Busiest month: Jul

FLEET MIX
Turboprop 67%Unknown 33%

Mostly turboprop aircraft.

TOP AIRCRAFT TYPES
›AT5T (Turboprop) · ~2 landings/mo
›UNKN (Unknown) · ~1 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly turboprop aircraft.

›AT5T (Turboprop)

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

IS94 has no on-field report. Nearest reporting station: KARR (13 NM NE, VFR).

KARR Aurora Municipal Airport
13 NM NE
VFR
KJOT Joliet Regional Airport
22 NM E
VFR
KLOT Lewis University Airport
25 NM E
VFR
KDPA Dupage Airport
26 NM NE
VFR
KVYS Illinois Valley Regional Airport Walter A Duncan Field
27 NM SW
VFR
KRFD Chicago Rockford International Airport
40 NM NW
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗IS94 on OurAirports
FREQUENTLY ASKED
Does IS94 have a METAR?
No on-field METAR is issued for IS94. This page uses the nearest reporting station as a reference.
Does IS94 have a TAF?
No TAF is issued directly for IS94. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at IS94?
IS94 sits at 667 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for IS94?
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.