Trenton Mercer Airport

KTTN / TTN

Ewing Township, US

Last Updated
Jul 4, 21:53Z

Current Weather

Display Units
Recent 35 min ago
21:53Z

🌙 Night
VFR
Flight Rules
36°C
Temperature
Dewpoint: 18°C
5 kt
260°
10 SM
Visibility
Ceiling
Unlimited
1010 hPa
QNH
Altimeter Setting

Raw METAR

METAR KTTN 042153Z 26005KT 10SM CLR 36/18 A2983 RMK AO2 SLP093 T03610183

Weather Briefing

VFR

Trenton Mercer Airport is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are from the west (260°) at 5 knots. Runway 24 is favored with a 5-knot headwind and 2-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 36°C (97°F) with a dewpoint of 18°C, indicating very dry conditions. High temperatures at this elevation may result in significant density altitude effects. Pilots should calculate density altitude and adjust performance expectations accordingly.

Forecast Outlook

The TAF forecast covers the next 24 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: Thunderstorm Rain, Mist. Temporary IFR conditions are forecast with Thunderstorm Rain between 00:00Z and 04:00Z.

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
1010 hPa
Sea Level Pressure
For altitude above MSL
QFE
1003 hPa
Field Pressure
Height above aerodrome (213 ft)
Pressure Alt
311 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,882 ft (High - Reduced Performance)
ISA Deviation: +21.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KTTN 041720Z 0418/0518 28010KT P6SM SCT250 FM042300 30012G20KT P6SM VCTS SCT050CB BKN120 TEMPO 0500/0504 2SM TSRA BKN025CB FM050400 VRB03KT 6SM BR BKN050
Upcoming Changes (Next 12 Hours)
22:27Z BASE
+0h
VFR 280° 10 kt
Visibility: >6SM
23:00Z FM042300
+1h
MVFR 300° 12 kt
Visibility: >6SM
Ceiling: 12,000 ft
00:00Z TEMPO
+2h
IFR
Visibility: 2SM
Ceiling: 2,500 ft
Thunderstorm Rain
04:00Z FM050400
+6h
VFR VRB 3 kt
Visibility: 6SM
Ceiling: 5,000 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
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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
TTN
06
24 ✈️
16
34

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06/24
Active: 24
6,006 ft 150 ft ASP 47°
4.7 kt 1.7 kt
20° angle
16/34 4,800 ft 150 ft ASP 145°
2.1 kt 4.5 kt
115° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KTTN

8,103 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
74.9%
MVFR
13.2%
IFR
7.3%
LIFR
4.6%

Trenton Mercer Airport typically experiences VFR conditions 74.9% of the time, though instrument-rated pilots will find IFR weather present approximately 11.9% of observations. Prevailing winds are from the W averaging 7.5 knots. Calm conditions occur 14.5% of the time. Temperature extremes range from -17°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are July, June, May.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 7.5 kt
Maximum Recorded: 28 kt
Calm Winds: 14.5%
Direction Distribution:
E
7.4%
N
12%
S
11.3%
W
20%
NE
6.7%
NW
13.9%
SE
2.8%
SW
11.4%

Temperature Range

Average: 9.1°C
Range: -17°C to 35°C
-17°C 35°C

Visibility

Average: 9.1 SM
Below 3 SM: 2.9%
Fog Frequency: 1.9%

Best Months for VFR

July June May

Runway Wind Analysis

Runway 06/24
Favorable wind: 100%
Avg crosswind: 4.8 kt
Runway 16/34
Favorable wind: 100%
Avg crosswind: 4.8 kt

Statistics computed from 8,103 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

Trenton Mercer Airport - Airport Information

Airport Details

ICAO Code: KTTN
IATA Code: TTN
Type: medium airport
Status: active
Elevation: 213 ft MSL

Location

City: Ewing Township
Country: US
Latitude: 40.276699°
Longitude: -74.813499°
Time Zone: Etc/GMT+5

Runway Information

Runway 06/24
Length: 6,006 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 16/34
Length: 4,800 ft
Width: 150 ft
Surface: ASP
ILS: No

About Trenton Mercer Airport

Overview

Trenton Mercer Airport serves the Greater Trenton area as a medium-sized airport located in Ewing Township, New Jersey. Positioned at an elevation of 213 feet MSL, the airport provides critical aviation infrastructure for the region with two asphalt runways capable of supporting various aircraft operations.

Flying Conditions

Weather conditions at KTTN demonstrate predominantly favorable VFR flying opportunities, with 75.4% of observations reporting visual flight rules. The airport experiences moderate wind conditions, with a prevailing westerly wind at 7.3 knots and occasional gusts up to 24 knots. Temperature variations are significant, ranging from -17°C to 29°C, suggesting pilots should prepare for diverse seasonal conditions.

Notable Features

The airport features two parallel runways: Runway 06/24 at 6,006 feet and Runway 16/34 at 4,800 feet, both constructed with asphalt surfaces. Both runways demonstrate consistent wind alignment, with 100% favorable wind conditions and relatively low average crosswind speeds around 4.7-4.9 knots, providing predictable landing and takeoff environments.

Approach Considerations

Pilots can expect excellent visibility averaging 9 statute miles, with only 3.2% of observations reporting visibility below 3 miles. September, October, and November represent the most consistently favorable VFR months, offering optimal flying conditions. The airport's geographic position and runway configuration support reliable operations across various wind conditions.

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.