Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
IFRLong Island Mac Arthur Airport is currently reporting instrument flight rules (IFR) conditions with few clouds at 200 feet and 2 SM visibility.
Wind Analysis
Winds are from the north (350°) at 3 knots.
Visibility & Ceiling
Visibility is reduced to 2 SM. IFR conditions prevail and an instrument clearance is required for operations in controlled airspace. No ceiling exists. Cloud layers reported: few at 200 ft.
Temperature & Moisture
Temperature is 6°C (43°F) with a dewpoint of 6°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.
Forecast Outlook
The TAF forecast covers the next 21 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Mist. Temporary LIFR conditions are forecast with Mist between 09:00Z and 12:00Z.
Pilot Recommendations
An instrument rating and IFR flight plan are required. Verify that destination and alternate approach minimums are above current and forecast conditions. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
| 06/24 | 7,006 ft | 150 ft | ASP | 45° |
↑ 1.7 kt
•
↔ 2.5 kt
55° angle
|
| 10/28 | 5,034 ft | 150 ft | ASP | 90° |
↓ 0.5 kt
•
↔ 3.0 kt
100° angle
|
|
✈️ 15L/33R
Active: 33R
|
3,175 ft | 75 ft | ASP | 135° |
↑ 2.8 kt
•
↔ 1.0 kt
20° angle
|
|
✈️ 15R/33L
Active: 33L
|
5,186 ft | 150 ft | ASP | 135° |
↑ 2.8 kt
•
↔ 1.0 kt
20° angle
|
Weather Statistics - KISP
5,491 observations | Sep 2025 - Apr 2026Flight Rules Distribution
Long Island Mac Arthur Airport typically experiences VFR conditions 79.8% of the time, though instrument-rated pilots will find IFR weather present approximately 10.8% of observations. Prevailing winds are from the W averaging 9.8 knots, with gusts recorded up to 33 knots. Calm conditions occur 10.6% 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
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 5,491 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.
Long Island Mac Arthur Airport - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
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.
Learn More
Recommended guides based on current conditions at KISP
Official Data Sources
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.