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Princeton Airport (K39N) Area Aviation Weather & Runway Winds

As of 11:53 AM ET, Oct 28, based on the nearest station (KTTN), K39N is currently VFR with winds from 080° at 6 knots, visibility 10+ statute miles, and no ceiling reported.

Aviation weather near Princeton Airport in Princeton/Rocky Hill, NJ, decoded from the nearest reporting station (KTTN): conditions and runway crosswinds.

Princeton Airport (K39N) is a general aviation airport serving pilots in and around Princeton/Rocky Hill, NJ at a field elevation of 128 ft. K39N has no weather station of its own. Conditions here are decoded from KTTN, about 10 nm away, the nearest reporting station, and local conditions can differ. It has one runway (10/28), the longest 3,499 ft. The nearest TAF is issued for KTTN.

Ask ATIS AIAsk anything about K39N's weather, runways or delays, or search another airport.
VFR
Observed 1553Z (11:53 AM EDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KTTN, 10.2 nm away.

Wind
080° 6 kt
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
30.45"
Temp / Dew
59°F / 15°C
dew 42°F / 6°C

Wind from the east (080°) at 6 kt, visibility 10+ statute miles, no cloud data, temperature 15°C (59°F), altimeter 30.45 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KTTN 281553Z 08006KT 10SM CLR 15/06 A3045 RMK AO2 SLP305 T01500056

What changed at KTTN (nearest station)?

Since the 1453Z (10:53 AM EDT) report, compared automatically against the latest METAR.

  • Pressure falling: altimeter 30.47 → 30.45 inHg.

Current pilot readout for K39N

Based on the nearest station (KTTN), K39N is currently VFR with winds from 080° at 6 knots, visibility 10+ statute miles, and no ceiling reported. the wind favors east-facing runway ends (10). Density altitude is approximately -500 ft (field elevation 128 ft). Review the latest TAF below for forecast changes before departure.

New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →

Runway wind check

Estimated head/tailwind and crosswind for each runway end from the current reported wind.

RunwayHead / TailCrosswind
10FAV6 kt head1 kt left
286 kt tail1 kt right

Open the crosswind calculator to try your own wind and runway numbers →

K39N runways

1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.

  • Runway 10/28
    3,499 × 75 ft · ASP
    Status not monitored
    Current use
    no stated-runway source at K39N
    Wind
    10
    6 kt headwind · 1 kt crosswind from left
    28
    6 kt tailwind · 1 kt crosswind from right
    no active equipment NOTAM receivedView Runway Intelligence →

“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.

24-hour trend

Wind, ceiling and flight category over the last 24 hours.

Wind (kt)Gusts (kt)Bottom strip, flight category:VFRMVFRIFRLIFRNo report
061216Z04Z15Z

Over the last 23 h: wind 4→6 kt, ceiling unlimited → unlimited.

K39N weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.

Loading…
Loading radar…

Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap

NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.

Pilot reports (PIREPs) within 100 NM of K39N

Reported by pilots in flight over the past 6 hours, via aviationweather.gov.

PIREP1552Z (11:52 AM EDT) · 100 NM N of K39N · 18,000 ft MSL · CRJ7
light to moderate turbulence
Show raw report
DEN UA /OV 20N/TM 1552/FL180/TP CRJ7/TB LGT-MOD
DEN UAHeader: reporting station and UA: a routine pilot report.
OV 20NLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1552Reported at 15:52 UTC.
FL180Altitude: 18,000 ft MSL.
TP CRJ7Aircraft type reporting.
TB LGT-MODTurbulence: light to moderate.
PIREP1255Z (8:55 AM EDT) · 74 NM N of K39N · 35,000 ft MSL · BCS3
Show raw report
POU UA /OV IGN260015/TM 1255/FL350/TP BCS3/TB NEG
POU UAHeader: reporting station and UA: a routine pilot report.
OV IGN260015Location: fix or navaid, optionally with a radial and distance in NM.
TM 1255Reported at 12:55 UTC.
FL350Altitude: 35,000 ft MSL.
TP BCS3Aircraft type reporting.
TB NEGTurbulence: none reported.
PIREP1244Z (8:44 AM EDT) · 84 NM NE of K39N · during climb · E545
Show raw report
BDR UA /OV BDR340010/TM 1244/FL210/TP E545/TB NEG/RM DURC
BDR UAHeader: reporting station and UA: a routine pilot report.
OV BDR340010Location: fix or navaid, optionally with a radial and distance in NM.
TM 1244Reported at 12:44 UTC.
FL210Altitude: 21,000 ft MSL.
TP E545Aircraft type reporting.
TB NEGTurbulence: none reported.
RM DURCRemarks.
PIREP1022Z (6:22 AM EDT) · 88 NM W of K39N · 36,000 ft MSL · UAL2434
Show raw report
ARP UAL2434 4033N 07635W 1022 F360 255/058KT TB SMTH IC
ARP UAL2434 4033N 07635W 102…Header: reporting station and UA: a routine pilot report.

⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.

Recent aviation weather trends at K39N

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KTTN reported mostly VFR across 24 observations, with 0 flight-category changes. Wind most often came from the N.

Last 24 hours
VFR 100%
Wind avg/max: 3/6 kt
Max gust: -
Lowest ceiling: -
Lowest vis: -
Prevailing wind: N
Category changes: 0
Last 7 days
VFR 100%
Wind avg/max: 4/10 kt
Max gust: 25 kt
Lowest ceiling: -
Lowest vis: 10 sm
Prevailing wind: N
Category changes: 0
Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

28
58%
10
42%

TAF | Terminal Aerodrome Forecast

Issued 1120Z (7:20 AM EDT)

TAF KTTN 281120Z 2812/2912 VRB03KT P6SM SKC FM281600 13006KT P6SM SCT250 FM290000 VRB02KT P6SM SCT250

New to TAFs? How to read one →

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No live weather from K39N

Live crosswind meter

K39N has no weather feed online, so the wind comes from KTTN, 10 nm away.

N10286 kt
Headwind
6 kt
Crosswind (from the left)
1 kt

Wind is 9° off runway 10, the end with the most headwind right now.

Have a weather station at K39N? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Asphalt · 3,499 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Princeton Airport (K39N) with runway 10/28 marked
N ↑

Runway 10/28 drawn from FAA threshold coordinates.

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

From the FAA airport record (cycle 2026-10-01) and OurAirports.

Services

Fuel
100LL · Jet A
Attended
Daily 0800-DUSK local
Repairs
Airframe & engine, major
Transient parking
Tie-downs · Hangars
Landing fee
Yes
Other services
Avionics · Charter · Flight instruction · Aircraft rental · Aircraft sales
Control tower
None
Wind indicator
Lighted

Airport

Type
General aviation airport
IATA
PCT
FAA LID
39N
City
Princeton/Rocky Hill
State
New Jersey
Country
United States
Elevation
128 ft
Coordinates
40.3992, -74.6589
Runways
1 physical runway · 2 runway ends
Longest runway
3,499 ft
Weather reporting
Nearest station KTTN
TAF
Nearest KTTN
Time zone
America/New_York
Sunset in
5h 45m

Run a flight school, FBO, or club here? Embed K39N's live status on your website, free →

Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

VFRMVFRIFRLIFRNo report

RC flying fields nearby

AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.

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Pilot PIREPs for Princeton Airport (K39N)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Princeton Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.

⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.

No Pilot PIREPs have been submitted for K39N yet. Recently flew here? Help the next pilot by leaving a quick airport note.

Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.

⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.

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