Long Island Mac Arthur Airport

KISP / ISP

Islip, US

Last Updated
Mar 4, 14:56Z

Current Weather

Display Units
Aging 1 hour ago
14:56Z

☀️ Day
VFR
Flight Rules
4°C
Temperature
Dewpoint: 2°C
8 kt
10°
10 SM
Visibility
25,000 ft
Ceiling
Above Ground Level
1025 hPa
QNH
Altimeter Setting

Raw METAR

METAR KISP 041456Z 01008KT 10SM FEW080 FEW150 BKN250 04/02 A3027 RMK SLP 252 T00440017 53004

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 99 ft
FEW 8,000 ft AGL
FEW 15,000 ft AGL
BKN 25,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
8,000 ft
AGL (Above Ground)
8,099 ft AMSL
🌤️
FEW
Few (1/8-2/8 sky coverage)
15,000 ft
AGL (Above Ground)
15,099 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
25,000 ft
AGL (Above Ground)
25,099 ft AMSL
QNH
1025 hPa
Sea Level Pressure
For altitude above MSL
QFE
1022 hPa
Field Pressure
Height above aerodrome (99 ft)
Pressure Alt
-254 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -1,550 ft
ISA Deviation: -10.8°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KISP 041441Z 0415/0512 36006KT P6SM FEW060 BKN250 FM042000 VRB04KT P6SM SCT250 FM050000 VRB02KT P6SM BKN025 FM050400 VRB02KT 6SM BR BKN007
Upcoming Changes (Next 12 Hours)
16:00Z BASE
+0h
VFR 360° 6 kt
Visibility: >6SM
Ceiling: 25,000 ft
20:00Z FM042000
+4h
VFR VRB 4 kt
Visibility: >6SM
00:00Z FM050000
+8h
MVFR VRB 2 kt
Visibility: >6SM
Ceiling: 2,500 ft
04:00Z FM050400
+12h
IFR VRB 2 kt
Visibility: 6SM
Ceiling: 700 ft
Mist

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
  • • Hover for exact values and timestamps
  • • Click legend items to toggle data series
  • • Zoom and pan for detailed analysis
  • • Units automatically converted to preferences
Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
ISP
06 ✈️
24
10
28
15L
33R
15R
33L

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06/24
Active: 06
7,006 ft 150 ft ASP 45°
5.1 kt 6.1 kt
50° angle
10/28 5,034 ft 150 ft ASP 90°
1.4 kt 7.9 kt
80° angle
15L/33R 3,175 ft 75 ft ASP 135°
4.6 kt 6.6 kt
125° angle
15R/33L 5,186 ft 150 ft ASP 135°
4.6 kt 6.6 kt
125° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KISP

4,210 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
81.5%
MVFR
9.3%
IFR
6.2%
LIFR
2.9%

Long Island Mac Arthur Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 81.5% of the time. Prevailing winds are from the W averaging 9.8 knots, with gusts recorded up to 33 knots. Calm conditions occur 10.8% of the time. Temperature extremes range from -16°C to 29°C, reflecting significant seasonal variation. The best months for VFR flying are December, September, November.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 9.8 kt
Maximum Recorded: 33 kt
Calm Winds: 10.8%
Direction Distribution:
N
13.9%
NE
8.7%
E
5.8%
SE
2.8%
S
7.6%
SW
12.8%
W
21.3%
NW
16.2%

Temperature Range

Average: 5.8°C
Range: -16°C to 29°C
-16°C 29°C

Visibility

Average: 9.3 SM
Below 3 SM: 2.9%
Fog Frequency: 2.8%

Best Months for VFR

December September November

Runway Wind Analysis

Runway 06/24
Favorable wind: 100%
Avg crosswind: 6.4 kt
Runway 10/28
Favorable wind: 100%
Avg crosswind: 5.9 kt
Runway 15L/33R
Favorable wind: 100%
Avg crosswind: 6.1 kt
Runway 15R/33L
Favorable wind: 100%
Avg crosswind: 6.1 kt

Statistics computed from 4,210 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

Long Island Mac Arthur Airport - Airport Information

Airport Details

ICAO Code: KISP
IATA Code: ISP
Type: medium airport
Status: active
Elevation: 99 ft MSL

Location

City: Islip
Country: US
Latitude: 40.795200°
Longitude: -73.100197°
Time Zone: Etc/GMT+5

Runway Information

Runway 06/24
Length: 7,006 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 10/28
Length: 5,034 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 15L/33R
Length: 3,175 ft
Width: 75 ft
Surface: ASP
ILS: No
Runway 15R/33L
Length: 5,186 ft
Width: 150 ft
Surface: ASP
ILS: No

About Long Island Mac Arthur Airport

Overview

Long Island MacArthur Airport serves Suffolk County in New York, providing a critical transportation hub for Long Island's eastern regions. Located at 99 feet MSL with coordinates 40.795200, -73.100197, the airport offers four asphalt runways supporting various aviation operations. As a medium-sized airport, it provides essential infrastructure for general aviation, commercial, and regional aircraft.

Flying Conditions

Weather observations indicate predominantly favorable flying conditions, with 82.8% of recorded METARs reporting VFR conditions. Prevailing westerly winds at an average of 9.6 knots create stable approach environments. Temperature ranges from -11°C to 29°C suggest significant seasonal variation, with December, September, and November presenting the most consistently favorable VFR weather conditions.

Notable Features

The airport features four runways with substantial length variations: 06/24 at 7,006 feet, 10/28 at 5,034 feet, and two parallel runways 15L/33R and 15R/33L at 3,175 and 5,186 feet respectively. All runways demonstrate 100% favorable wind alignment, with modest average crosswind components ranging between 5.5 and 6.4 knots. This configuration provides pilots multiple landing options under varying wind conditions.

Approach Considerations

Wind data suggests a consistent westerly wind pattern, which typically favors runways oriented west-east and north-south. Visibility averages 9.4 statute miles, with only 2.2% of observations showing conditions below 3 miles and minimal fog occurrence at 1.2%. Pilots should anticipate generally stable approach conditions with multiple runway options for safe landing.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.