4IS3 Weather University of Chicago Hospitals Heliport

Chicago, IllinoisElevation 665 ftHeliport

OFF-FIELD REFERENCE

Nearest report: KMDW · 7 NM W · 53 min old

Ceiling 25,000 ft, visibility 10 SM.

No on-field report, so no field flight category. Conditions at the field may differ.

OFF-FIELD REFERENCE · KMDW

WIND

180@3

steady

VISIBILITY

10 SM

16.1 km

CEILING

25,000 ft

lowest BKN/OVC

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 180° at 3 kt, visibility 10 SM, temperature 16.1C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight partly cloudy, low near 55F, 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.

Day	Conditions	Temp F	Wind	Gusts	Precip	Pilot note
Tonight	Partly Cloudy	55	WSW 9 kt	–	1%
Monday	Patchy Fog then Mostly Cloudy	60/52	NNE 13 kt	22 kt	3%
Tuesday	Mostly Cloudy	65/57	SE 9 kt	17 kt	3%
Wednesday	Mostly Sunny	68/59	SSW 9 kt	–	6%
Thursday	Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms	73/58	SW 9 kt	–	23%	Thunderstorms in the forecast
Friday	Chance Rain Showers	72/60	SSE 4 kt	–	27%
Saturday	Chance Rain Showers	70/59	S 4 kt	–	54%
Sunday	Chance Rain Showers	67	SSW 9 kt	–	43%

Source: National Weather Service (office LOT). Forecast issued 0332Z.

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 4IS3. Enter a runway number or heading to estimate wind components.

RUNWAYS

Runway detail & declared distances

2 runways · longest 38 ft

Dimensions

50 x 50 ft

Surface

Mats

RWY H2

Dimensions

50 x 50 ft

Surface

Psp

Edge lights

PERI

RWY H1

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

FIELD CONDITIONS

Field elevation

665 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset

2254Z 5:54 PM

Sunrise

1215Z 7:15 AM

Loggable night

2322Z (6:22 PM local) → 1146Z (6:46 AM local)

end of evening to start of morning civil twilight

Position lights required

2254Z (5:54 PM local) → 1215Z (7:15 AM local)

sunset to sunrise (91.209)

Night passenger currency

2354Z (6:54 PM local) → 1115Z (6:15 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

University of Chicago Hospitals Heliport is in Chicago, Illinois. Field elevation 665 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT

OwnershipPrivately owned

UsePrivate use

TypeHeliport

ManagerCANDICE SCHAPER

Manager phone773-702-3222

AttendedContinuous (24 hours)

CHARTS & AIRSPACE

ICAO / IATA4IS3

SectionalCHICAGO

Center (ARTCC)CHICAGO

Flight service (AFSS)KANKAKEE

RegionIllinois

CountryUnited States

Coordinates41.7884, -87.6042

Distance from city0 NM NW

SERVICES & LIGHTING

Control towerNon-towered

Field lightingSee remarks

BeaconSee remarks · White-green-yellow (heliport)

AIRCRAFT ACTIVITY

4IS3 traffic patterns

2026-06-13 to 2026-10-23, 63 days observed · data 2026-10-23

High confidence

TRAFFIC VOLUME (30-DAY)

AVG LANDINGS/DAY

2.4

AVG OPS/DAY

4.2

Operations trend (18 days)

Busiest day: Sat · Busiest month: Oct

FLEET MIX

Helicopter 98%Piston single 2%

Mostly rotorcraft.

TOP AIRCRAFT TYPES

›EC45 (Helicopter) · ~18 landings/mo

›B429 (Helicopter) · ~4 landings/mo

›B407 (Helicopter) · ~2 landings/mo

›EC35 (Helicopter) · ~2 landings/mo

›B412 (Helicopter) · ~2 landings/mo

LIKELY BASED AIRCRAFT

Low-confidence estimate

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

›EC45 (Helicopter)

›B429 (Helicopter)

›B407 (Helicopter)

›EC35 (Helicopter)

›B412 (Helicopter)

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

4IS3 has no on-field report. Nearest reporting station: KMDW (7 NM W, VFR).

KMDW Chicago Midway International Airport

7 NM W

VFR

KORD Chicago O'Hare International Airport

18 NM NW

VFR

KLOT Lewis University Airport

25 NM SW

VFR

KDPA Dupage Airport

30 NM W

VFR

KJOT Joliet Regional Airport

30 NM SW

VFR

KVPZ Porter County Municipal Airport

33 NM SE

VFR

AIRPORT REMARKS

Operational remarks

›PERIMETER LGTS OPR 24 HRS.

›ROOFTOP.

›FOR CD CTC CHICAGO APCH AT 847-289-0926.

›MEDICAL USE.

›PRVDD ALL OPNS ARE CONDD IN AREA FM 080-100 DEG, 170-190 & 350-030 DEGS. AREA IS APROPLY MKD. WIND INDCR IS MAINTD.

›FREQ 129.475 AVBL FOR MEDICAL CNTR.

›24 HRS

›EMAIL ADDRESS: IRA.BLUMEN@UCHOSPITALS.EDU (ALL LOWER CASE)

OFFICIAL LINKS & SOURCES

↗Search NOTAMs (official FAA NOTAM Search)

↗4IS3 on OurAirports

FREQUENTLY ASKED

Does 4IS3 have a METAR?

No on-field METAR is issued for 4IS3. This page uses the nearest reporting station as a reference.

Does 4IS3 have a TAF?

No TAF is issued directly for 4IS3. Use the nearest TAF-issuing field as a planning reference.

What is the field elevation at 4IS3?

4IS3 sits at 665 ft MSL, which factors into the density-altitude estimate on this page.

Is this an official preflight weather briefing for 4IS3?

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.