WxDecoder

IL38 Weather J Maddock Airport

Big Rock, IllinoisElevation 705 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KARR · 3 NM E · 55 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 calm, visibility 10 SM, temperature 11C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 48F, 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 48 S 4 kt – 1%
Monday Patchy Fog then Mostly Cloudy 65/48 NE 9 kt 17 kt 3%
Tuesday Mostly Cloudy 69/53 SE 9 kt – 10%
Wednesday Mostly Sunny 72/55 S 9 kt – 15%
Thursday Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 76/54 SW 9 kt – 28% Thunderstorms in the forecast
Friday Chance Rain Showers 76/56 SSE 9 kt – 35%
Saturday Chance Rain Showers 72/56 SSE 9 kt – 51%
Sunday Chance Rain Showers 70 SW 9 kt – 35%

Source: National Weather Service (office LOT). Forecast issued 0246Z.

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 IL38. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,600 ft

E/W
Dimensions
2,600 x 70 ft
Surface
Turf (good)
RWY E
Traffic patternLeft
RWY W
Traffic patternRight

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
705 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
1218Z 7:18 AM
Loggable night
2326Z (6:26 PM local) → 1150Z (6:50 AM local)
end of evening to start of morning civil twilight
Position lights required
2258Z (5:58 PM local) → 1218Z (7:18 AM local)
sunset to sunrise (91.209)
Night passenger currency
2358Z (6:58 PM local) → 1118Z (6:18 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

J Maddock Airport is in Big Rock, Illinois. Field elevation 705 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerJAY B. MADDOCK
Manager phone630-466-7523
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAIL38
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)KANKAKEE
RegionIllinois
CountryUnited States
Coordinates41.7670, -88.5320
Distance from city1 NM SE
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

IL38 traffic patterns

2026-07-03 to 2026-10-21, 16 days observed · data 2026-10-23

Medium confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
3.3
AVG OPS/DAY
6.2
Activity trend over 6 days: falling, from 8 to 1 operations per dayOperations trend (6 days)

Busiest day: Tue · Busiest month: Sep

FLEET MIX
Piston single 64%Turboprop 20%Unknown 16%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›C172 (Piston single) · ~6 landings/mo
›SS2T (Turboprop) · ~3 landings/mo
›GX (Unknown) · ~2 landings/mo
›C72R (Piston single) · ~1 landings/mo
›P28R (Piston single) · ~1 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

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

›C172 (Piston single)
›SS2T (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

IL38 has no on-field report. Nearest reporting station: KARR (3 NM E, VFR).

KARR Aurora Municipal Airport
3 NM E
VFR
KDPA Dupage Airport
15 NM NE
VFR
KLOT Lewis University Airport
22 NM SE
VFR
KJOT Joliet Regional Airport
22 NM SE
VFR
KORD Chicago O'Hare International Airport
31 NM NE
VFR
KMDW Chicago Midway International Airport
35 NM E
VFR
AIRPORT REMARKS

Operational remarks

›3 NM 260 DEG FROM AURORA MUNI ARPT.
›FOR CD CTC CHICAGO APCH AT 847-289-0926.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗IL38 on OurAirports
FREQUENTLY ASKED
Does IL38 have a METAR?
No on-field METAR is issued for IL38. This page uses the nearest reporting station as a reference.
Does IL38 have a TAF?
No TAF is issued directly for IL38. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at IL38?
IL38 sits at 705 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for IL38?
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.