North Island Naval Air Station-Halsey Field

KNZY / NZY

San Diego, US

Last Updated
Apr 21, 15:52Z

Military Airport

Restricted

This is a U.S. military installation. Civil aircraft operations are generally prohibited without prior authorization.

Access Notes:

Most military airfields closed to civil traffic; some joint-use exceptions exist

Consult official AIP (FAA AIP GEN 3.3) for current access procedures and restrictions.

Current Weather

Display Units
Fresh 20 min ago
15:52Z

☀️ Day
VFR
Flight Rules
18°C
Temperature
Dewpoint: 12°C
5 kt
140°
10 SM
Visibility
Ceiling
Unlimited
1018 hPa
QNH
Altimeter Setting

Raw METAR

METAR KNZY 211552Z 14005KT 10SM SCT028 18/12 A3005 RMK AO2 SLP175 T01780117

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 26 ft
SCT 2,800 ft AGL
SCT
Scattered (3/8-4/8 sky coverage)
2,800 ft
AGL (Above Ground)
2,826 ft AMSL

Weather Briefing

VFR

North Island Naval Air Station-Halsey Field is currently reporting visual flight rules (VFR) conditions with scattered clouds at 2,800 feet and 10 SM visibility.

Wind Analysis

Winds are from the southeast (140°) at 5 knots. Runway 11/29 is favored with a 4-knot headwind and 3-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. No ceiling exists. Cloud layers reported: scattered at 2,800 ft.

Temperature & Moisture

Temperature is 18°C (64°F) with a dewpoint of 12°C, indicating moderate moisture conditions.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Showers Rain. Temporary MVFR conditions are forecast with Light Showers Rain between 02:00Z and 08:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. 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.

QNH
1018 hPa
Sea Level Pressure
For altitude above MSL
QFE
1017 hPa
Field Pressure
Height above aerodrome (26 ft)
Pressure Alt
-117 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 249 ft
ISA Deviation: +3.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KNZY 2115/2215 VRB05KT 9999 SCT028 QNH2999INS FM211800 25010KT 9999 FEW030 BKN050 QNH3001INS FM220200 29010G18KT 9999 VCSH SCT020 BKN040 QNH3004INS TEMPO 2202/2208 8000 -SHRA BKNC015 FM221200 VRB05KT 9999 NSW BKN025 OVC040 QNH3010INS TX19/2122Z TN14/2213Z FS30160
Upcoming Changes (Next 12 Hours)
16:11Z BASE
+0h
VFR VRB 5 kt
Visibility: 10+ km
18:00Z FM211800
+2h
VFR 250° 10 kt
Visibility: 10+ km
Ceiling: 5,000 ft
02:00Z FM220200
+10h
VFR 290° 10 kt
Visibility: 10+ km
Ceiling: 4,000 ft
02:00Z TEMPO
+10h
MVFR
Visibility: 8 km
Light Showers Rain

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
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  • • 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
NZY
11 ✈️
29
18
36

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 11/29
Active: 11
7,500 ft 300 ft PEM 122°
4.3 kt 2.5 kt
30° angle
18/36 8,000 ft 200 ft PEM 195°
2.9 kt 4.1 kt
55° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KNZY

8,792 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
72.5%
MVFR
17.8%
IFR
6.3%
LIFR
3.4%

North Island Naval Air Station-Halsey Field typically experiences VFR conditions 72.5% of the time, though instrument-rated pilots will find IFR weather present approximately 9.7% of observations. Prevailing winds are from the NW averaging 6.5 knots. Calm conditions occur 22.6% of the time. Temperatures typically range between 7°C and 34°C with an average of 16.8°C. The best months for VFR flying are February, April, March.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 6.5 kt
Maximum Recorded: 30 kt
Calm Winds: 22.6%
Direction Distribution:
N
12.8%
NE
3.3%
E
6.2%
SE
5.3%
S
11.8%
SW
4.8%
W
12.7%
NW
20.6%

Temperature Range

Average: 16.8°C
Range: 7°C to 34°C
7°C 34°C

Visibility

Average: 8.9 SM
Below 3 SM: 1.8%
Fog Frequency: 3.1%

Best Months for VFR

February April March

Runway Wind Analysis

Runway 11/29
Favorable wind: 100%
Avg crosswind: 3.7 kt
Runway 18/36
Favorable wind: 100%
Avg crosswind: 4 kt

Statistics computed from 8,792 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

North Island Naval Air Station-Halsey Field - Airport Information

Airport Details

ICAO Code: KNZY
IATA Code: NZY
Type: medium airport
Status: active
Elevation: 26 ft MSL

Location

City: San Diego
Country: US
Latitude: 32.699200°
Longitude: -117.214996°
Time Zone: Etc/GMT+8

Runway Information

Runway 11/29
Length: 7,500 ft
Width: 300 ft
Surface: PEM
ILS: No
Runway 18/36
Length: 8,000 ft
Width: 200 ft
Surface: PEM
ILS: No

About North Island Naval Air Station-Halsey Field

North Island Naval Air Station-Halsey Field is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the US AIP for current access procedures and restrictions.

Overview

North Island Naval Air Station-Halsey Field is a medium-sized airport located in San Diego, California, serving naval aviation operations. Situated at 26 feet above mean sea level, the base is strategically positioned on the western edge of the continental United States. The airport features two substantial runways capable of supporting various military and potential civilian aircraft operations.

Flying Conditions

Weather conditions at KNZY are predominantly favorable for flying, with Visual Flight Rules (VFR) conditions present 65.9% of the time. Pilots can expect northwest winds averaging 6.4 knots, with occasional stronger gusts up to 30 knots. Temperature ranges from 7°C to 34°C, with best VFR conditions typically occurring in October, November, and January.

Notable Features

Both runways (11/29 and 18/36) offer excellent wind alignment, with 100% favorable wind coverage and minimal average crosswind conditions (3.7-3.8 knots). The airport's proximity to the Pacific Ocean influences its microclimate, with occasional fog events affecting 4% of observations and visibility dropping below 3 statute miles in 2.6% of recorded conditions.

Approach Considerations

Runway selection should consider the prevailing northwest winds, which dominate the local wind pattern. Both 7,500-foot (11/29) and 8,000-foot (18/36) runways provide substantial landing options with consistent wind characteristics. Pilots should be prepared for potential marine layer influences and verify current weather conditions before approach, given the airport's coastal location.

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.