WxDecoder

KISP/ISP METAR & TAF Long Island MacArthur Airport

Islip, New YorkElevation 99 ftMedium airport
CURRENT STATUS
VFR59 min old
No ceiling, visibility 10 SM.
FLIGHT CATEGORY
VFR
ceiling & visibility
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
DENSITY ALT
-434 ft
-533 ft vs field
CURRENT METAR

Decoded observation

Observed 0056Z (8:56 PM local) · 59 min old

KISP is currently VFR. Winds are calm. Visibility is 10 statute miles. There is no ceiling.

WIND
Calm
No steady wind.
VISIBILITY
10 statute miles
16.1 km, good.
CEILING & SKY
FEW250
FEW and SCT layers are not ceilings.
TEMP / DEWPOINT
12°C / 8°C
54°F / 46°F. 4°C spread.
ALTIMETER
30.12 inHg
1020 hPa, above standard.
WEATHER & HAZARDS
No significant hazards
No precipitation or obscuration reported.

Codes in this report: FEW RMK AO2

Hover or tap any group for a plain-English explanation.

REMARKS: DECODED
AO2
automated station with a precipitation discriminator (can tell rain from snow)
SLP200
sea-level pressure 1020.0 hPa
T01170078
precise temperature 11.7°C, dew point 7.8°C
TERMINAL AERODROME FORECAST

TAF timeline

Issued 2352Z (7:52 PM local) · valid to 0000Z (8:00 PM local)

KISP forecast starts VFR at 00Z. Conditions are roughly steady over the period.

VFR
VFR
VFR
VFR
VFR
VFR
0000Z8:00 PM0448Z12:48 AM0936Z5:36 AM1424Z10:24 AM1912Z3:12 PM0000Z8:00 PM

Codes in this report: P6SM FEW SCT SKC

Tap any group to decode it.

FAA: no delays reported at ISP.

Source: FAA System Operations (ASWS). Operational status only; verify with official FAA sources and NOTAMs.

SUGGESTED RISK · TRAINING USE

Suggested risk level: Low

›No significant weather concerns in the current report.

A suggested risk level for training and situational awareness only, not a go/no-go authority. Verify with official sources and apply your personal minimums.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

Current aviation conditions show flight category VFR, wind calm, visibility 10 SM, ceiling none. Forecast suggests tonight mostly clear, low near 48F, 2% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Clear 48 NW 10 kt – 2%
Tuesday Sunny 58/35 N 11 kt – 2%
Wednesday Areas Of Frost then Sunny 61/49 E 7 kt – 0%
Thursday Mostly Sunny 65/53 SW 10 kt – 0%
Friday Sunny 71/48 W 9 kt – 0%
Saturday Mostly Sunny 65/49 NE 8 kt – 2%
Sunday Mostly Cloudy 65/53 SE 8 kt – 9%
Monday Slight Chance Rain Showers 66 S 9 kt – 19%

Source: National Weather Service (office OKX). Forecast issued 0155Z.

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
3 runways · crosswind ranking
NESW15R33L15L33R0624CALMCALMCALMCALMCALM
WIND USED
Wind calm or variable
Crosswind ranking is unavailable until the wind has a steady direction.
Components are estimates from the current METAR wind and runway heading. Verify with the Chart Supplement and NOTAMs.
RUNWAYS

Runway detail & declared distances

5 runways · longest 7,006 ft

15R/33L
Dimensions
5,186 x 150 ft
Surface
Asphalt (excellent)
Edge lights
MED
RWY 15R135°T
Landing length (LDA)5,186 ft
TORA / TODA / ASDA5,186 / 5,186 / 5,186 ft
VGSIPAPI (P4L)
Traffic patternRight
RWY 33L315°T
Landing length (LDA)5,186 ft
TORA / TODA / ASDA5,186 / 5,186 / 5,186 ft
VGSIPAPI (P4L)
Traffic patternLeft
H1
Dimensions
50 x 50 ft
Surface
Asphalt (good)
RWY H1
H2
Dimensions
50 x 50 ft
Surface
Asphalt (good)
RWY H2
15L/33R
Dimensions
3,175 x 75 ft
Surface
Asphalt (fair)
RWY 15L135°T
Landing length (LDA)3,175 ft
TORA / TODA / ASDA3,175 / 3,175 / 3,175 ft
Traffic patternLeft
RWY 33R315°T
Landing length (LDA)3,175 ft
TORA / TODA / ASDA3,175 / 3,175 / 3,175 ft
Traffic patternRight
06/24
Dimensions
7,006 x 150 ft
Surface
Asphalt (good)
Edge lights
HIGH
RWY 0645°T
Landing length (LDA)7,006 ft
TORA / TODA / ASDA7,006 / 7,006 / 7,006 ft
ILSILS/DME
Approach lightsMALSR
VGSIPAPI (P4L)
Traffic patternLeft
RWY 24225°T
Landing length (LDA)7,006 ft
TORA / TODA / ASDA7,006 / 7,006 / 7,006 ft
ILSILS/DME
Approach lightsMALSR
VGSIPAPI (P4L)
Traffic patternRight

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

FIELD CONDITIONS

Performance & density altitude

Density altitude
-434 ft
Pressure altitude
-101 ft
Field elevation
99 ft MSL
Temperature
12°C (54°F)
Dewpoint
8°C (46°F)
Altimeter
30.12 inHg

Density altitude estimates how the aircraft performs versus standard atmosphere. Higher density altitude reduces climb performance and increases takeoff distance.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2156Z 5:56 PM
Sunrise
1116Z 7:16 AM
Loggable night
2224Z (6:24 PM local) → 1048Z (6:48 AM local)
end of evening to start of morning civil twilight
Position lights required
2156Z (5:56 PM local) → 1116Z (7:16 AM local)
sunset to sunrise (91.209)
Night passenger currency
2256Z (6:56 PM local) → 1016Z (6:16 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

Long Island MacArthur Airport is in Islip, New York. Field elevation 99 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeMedium airport
Airline serviceYes
ManagerROBERT A. SCHNEIDER
Manager phone631-467-3300
AttendedContinuous (24 hours)
CHARTS & AIRSPACE
ICAO / IATAKISP / ISP
SectionalNEW YORK
Center (ARTCC)NEW YORK
Flight service (AFSS)NEW YORK
RegionNew York
CountryUnited States
Coordinates40.7963, -73.1017
Distance from city40 NM E
SERVICES & LIGHTING
Fuel100LL · Jet A
Control towerTowered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF119.300
UNICOM122.950
FREQUENCIES

Communications

118
NEW YORK APP/DEP
A/D
120.725
ATIS
ATIS
121.85
CLNC DEL
CLD
119.3
CTAF
CTAF
135.3
GND
GND
45
GUARD OPS
OPS
122.6
NEW YORK RDO
RDO
119.3
TWR
TWR
122.95
UNICOM
UNIC
122.950
UNICOM
UNICOM

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

KISP traffic patterns

2026-06-12 to 2026-10-25, 69 days observed · data 2026-10-25

High confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
72.9
AVG OPS/DAY
109.8
Activity trend over 17 days: rising, from 5 to 129 operations per dayOperations trend (17 days)

Busiest day: Fri · Busiest month: Oct

FLEET MIX
Piston single 64%Unknown 8%Airliner 8%Jet 7%Twin 7%Helicopter 3%Turboprop 2%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›C172 (Piston single) · ~485 landings/mo
›P28A (Piston single) · ~158 landings/mo
›PA44 (Twin) · ~45 landings/mo
›UNKN (Unknown) · ~31 landings/mo
›A320 (Airliner) · ~20 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

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

›C172 (Piston single)
›P28A (Piston single)
›PA44 (Twin)
›C182 (Piston single)
›H60 (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

Current flight category at nearby reporting stations.

KHWV Brookhaven Calabro Airport
11 NM E
VFR
KFRG Republic Airport
15 NM W
VFR
KFOK Francis S Gabreski Airport
22 NM E
VFR
KBDR Igor I Sikorsky Memorial Airport
22 NM N
VFR
KHVN Tweed New Haven Airport
30 NM N
VFR
KHPN Westchester County Airport
32 NM NW
VFR
AIRPORT REMARKS

Operational remarks

›TWY S UNLGTD EAST OF TRML APN.
›LCTD ON TWY W SOUTH OF INT OF TWY B.
›VOLUNTARY NS ABTMT PROCEDURES IN EFFECT FOR FIXED WING ACFT AND HELICOPTERS. CTC AIRPORT MANAGEMENT (631)467-3300.
›RWY 15L/33R NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS.
›LDG FEE FOR ALL ACFT EXC MIL AND GOVT.
›FOR CD WHEN ATCT CLSD CTC NEW YORK APCH AT 516-683-2449.
›ADZY:TFC LNDG RWY 33L HIGH DENSITY VFR TFC OPERG 600 FT MSL & BLW VCNTY BAYPORT AERODROME 3 MILES SE.
›BIRD ACTVTY ON & INVOF ARPT.
›PCR VALUE: 550/F/A/X/T
›LCTD ON TWY C NORTH OF TWY S.
›RWY 15L/33R NOT AVBL FOR NIGHT TKOF AND LDG OPS. LIMITED TO ACFT 48,000 LBS OR LESS.
›UPDRAFTS MAY BE ENCOUNTERED INVOF POWER PLANT 1.5 NM NE RWY 24.
›PCR VALUE: 280/F/B/X/T
›RWY 15L/33R CLSD TO FIXED WING ACFT AT NGT & AVBL FOR TXG.
›PCR VALUE: 590/F/B/X/T
›NSTD MKGS, THR BAR MISG ON RWY END.
›NSTD MKGS, THR BAR MISG ON RWY END.
›NSTD MALSR; THREE OUTERMOST FLASHER LGTS EXCEED STD SPACING.
›DUSK TO DAWN. WHEN ATCT CLSD ACTVT MIRL RWY 15R/33L; TWY LGTS- CTAF. HIRL RWY 06/24 PRESET LOW INTST ACTVT - CTAF; MALSR RWY 06 & 24 PRESET MED INTST FOR PREVAILING WIND RWY.
›LDG FEE FOR ALL ACFT EXC MIL, GOVT AND NOT-FOR-PROFIT MEDICAL FLIGHTS.
OFFICIAL LINKS & SOURCES
↗Official METAR on AviationWeather.gov
↗Search NOTAMs (official FAA NOTAM Search)
↗Official airport website
↗Wikipedia
↗KISP on OurAirports
FREQUENTLY ASKED
Does KISP have a METAR?
Yes. KISP has a current METAR observation, decoded into plain English on this page.
Does KISP have a TAF?
Yes, a TAF is issued for KISP; the decoded forecast timeline is shown above.
What is the field elevation at KISP?
KISP sits at 99 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KISP?
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.