WxDecoder

41IS Weather Rees Field

Grand Ridge, IllinoisElevation 675 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KVYS · 18 NM NW · More than 1 hour old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KVYS
WIND
170@4
steady
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 visibility 10 SM. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight partly cloudy, low near 51F, 1% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Partly Cloudy 51 0 kt – 1%
Monday Partly Sunny 70/49 ENE 9 kt – 3%
Tuesday Mostly Cloudy 72/55 SE 9 kt – 8%
Wednesday Mostly Sunny 73/58 S 9 kt – 8%
Thursday Slight Chance Rain Showers 78/56 SW 9 kt – 30%
Friday Chance Rain Showers 78/58 S 4 kt – 30%
Saturday Chance Rain Showers 74/59 S 4 kt – 53%
Sunday Chance Rain Showers 72 SW 4 kt – 37%

Source: National Weather Service (office LOT). Forecast issued 0457Z.

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 41IS. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
675 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
1219Z 7:19 AM
Loggable night
2328Z (6:28 PM local) → 1150Z (6:50 AM local)
end of evening to start of morning civil twilight
Position lights required
2300Z (6:00 PM local) → 1219Z (7:19 AM local)
sunset to sunrise (91.209)
Night passenger currency
0000Z (7:00 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

Rees Field is in Grand Ridge, Illinois. Field elevation 675 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSmall airport
CHARTS & AIRSPACE
ICAO / IATA41IS
RegionIllinois
CountryUnited States
Coordinates41.2045, -88.8034
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

41IS traffic patterns

2026-07-13 to 2026-07-13, 1 days observed · data 2026-10-23

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

Busiest day: Mon · Busiest month: Jul

FLEET MIX
Turboprop 100%

Mostly turboprop aircraft.

TOP AIRCRAFT TYPES
›AT6T (Turboprop) · ~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

41IS has no on-field report. Nearest reporting station: KVYS (18 NM NW, VFR).

KVYS Illinois Valley Regional Airport Walter A Duncan Field
18 NM NW
VFR
KJOT Joliet Regional Airport
34 NM NE
VFR
KARR Aurora Municipal Airport
37 NM NE
VFR
KLOT Lewis University Airport
40 NM NE
VFR
KBMI Central Illinois Regional Airport at Bloomington-Normal
44 NM S
VFR
KIKK Greater Kankakee Airport
44 NM E
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗41IS on OurAirports
FREQUENTLY ASKED
Does 41IS have a METAR?
No on-field METAR is issued for 41IS. This page uses the nearest reporting station as a reference.
Does 41IS have a TAF?
No TAF is issued directly for 41IS. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 41IS?
41IS sits at 675 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 41IS?
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.