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Sunnyvale Field (CT21) Area Aviation Weather & Runway Winds

As of 8:53 AM ET, Oct 28, based on the nearest station (KWST), CT21 is currently VFR with winds from 020° at 5 knots, visibility 10+ statute miles, and no ceiling reported.

Aviation weather near Sunnyvale Field in North Stonington, CT, decoded from the nearest reporting station (KWST): conditions and runway crosswinds.

Sunnyvale Field (CT21) is a general aviation airport serving pilots in and around North Stonington, CT at a field elevation of 213 ft. CT21 has no weather station of its own. Conditions here are decoded from KWST, about 7 nm away, the nearest reporting station, and local conditions can differ. It has one runway (01/19), the longest 2,004 ft. The nearest TAF is issued for KGON.

Ask ATIS AIAsk anything about CT21's weather, runways or delays, or search another airport.
VFR
Observed 1253Z (8:53 AM EDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KWST, 6.8 nm away.

Wind
020° 5 kt
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
30.49"
Temp / Dew
41°F / 5°C
feels like 37°F

Wind from the north-northeast (020°) at 5 kt, visibility 10+ statute miles, no cloud data, temperature 5°C (41°F), altimeter 30.49 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KWST 281253Z AUTO 02005KT 10SM CLR 05/M01 A3049 RMK AO2 SLP326 T00501011

What changed at KWST (nearest station)?

Since the 1153Z (7:53 AM EDT) report, compared automatically against the latest METAR.

  • Pressure rising: altimeter 30.47 → 30.49 inHg.

Current pilot readout for CT21

Based on the nearest station (KWST), CT21 is currently VFR with winds from 020° at 5 knots, visibility 10+ statute miles, and no ceiling reported. the wind favors north-facing runway ends (01). Density altitude is approximately -1,650 ft (field elevation 213 ft). CT21 does not publish a TAF. The nearest TAF station is KGON, about 13 nm away.

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
01FAV5 kt head0 kt
195 kt tail0 kt

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

CT21 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 01/19
    2,004 × 50 ft · Dirt
    Status not monitored
    Current use
    no stated-runway source at CT21
    Wind
    01
    5 kt headwind · 0 kt crosswind
    19
    5 kt tailwind · 0 kt crosswind
    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
061213Z01Z12Z

Over the last 23 h: wind 6→5 kt, ceiling unlimited → unlimited.

CT21 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 CT21

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

PIREP1246Z (8:46 AM EDT) · 40 NM W of CT21 · during descent · A310
light chop 240 turbulence
Show raw report
HVN UA /OV MAD/TM 1246/FL230/TP A310/TB LGT CHOP 240/RM DURD
HVN UAHeader: reporting station and UA: a routine pilot report.
OV MADLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1246Reported at 12:46 UTC.
FL230Altitude: 23,000 ft MSL.
TP A310Aircraft type reporting.
TB LGT CHOP 240Turbulence: light chop 240.
RM DURDRemarks.
PIREP1244Z (8:44 AM EDT) · 64 NM W of CT21 · 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.
PIREP1031Z (6:31 AM EDT) · 48 NM NW of CT21 · during climb · BCS3
Show raw report
BDL UA /OV BDL/TM 1031/FL240/TP BCS3/TB NEG/RM SMOOTH DURC 240-400
BDL UAHeader: reporting station and UA: a routine pilot report.
OV BDLLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1031Reported at 10:31 UTC.
FL240Altitude: 24,000 ft MSL.
TP BCS3Aircraft type reporting.
TB NEGTurbulence: none reported.
RM SMOOTH DURC 240-400Remarks.
PIREP1005Z (6:05 AM EDT) · 89 NM N of CT21 · 32,000 ft MSL · A321
occasional light chop turbulence
Show raw report
EEN UA /OV EEN/TM 1005/FL320/TP A321/TB OCNL LGT CHOP
EEN UAHeader: reporting station and UA: a routine pilot report.
OV EENLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1005Reported at 10:05 UTC.
FL320Altitude: 32,000 ft MSL.
TP A321Aircraft type reporting.
TB OCNL LGT CHOPTurbulence: occasional light chop.
PIREP0952Z (5:52 AM EDT) · 34 NM W of CT21 · during climb · A321
Show raw report
HFD UA /OV HFD/TM 0952/FL320/TP A321/TB NEG/RM DURC KBOS DEPT
HFD UAHeader: reporting station and UA: a routine pilot report.
OV HFDLocation: fix or navaid, optionally with a radial and distance in NM.
TM 0952Reported at 09:52 UTC.
FL320Altitude: 32,000 ft MSL.
TP A321Aircraft type reporting.
TB NEGTurbulence: none reported.
RM DURC KBOS DEPTRemarks.
PIREP0946Z (5:46 AM EDT) · 38 NM NW of CT21 · 28,000 ft MSL · B39M
Show raw report
BDL UA /OV BDL090020/TM 0946/FL280/TP B39M/TB NEG
BDL UAHeader: reporting station and UA: a routine pilot report.
OV BDL090020Location: fix or navaid, optionally with a radial and distance in NM.
TM 0946Reported at 09:46 UTC.
FL280Altitude: 28,000 ft MSL.
TP B39MAircraft type reporting.
TB NEGTurbulence: none reported.

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

Recent aviation weather trends at CT21

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KWST 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: 3/7 kt
Max gust: -
Lowest ceiling: -
Lowest vis: -
Prevailing wind: N
Category changes: 0
Last 7 days
VFR 100%
Wind avg/max: 5/15 kt
Max gust: 31 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.

01
55%
19
45%

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No live weather from CT21

Live crosswind meter

CT21 has no weather feed online, so the wind comes from KWST, 6.8 nm away.

N01195 kt
Headwind
5 kt
Crosswind
0 kt

Wind is 5° off runway 01, the end with the most headwind right now.

Have a weather station at CT21? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Dirt · 2,004 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Sunnyvale Field (CT21) with runway 01/19 marked
N ↑

Runway 01/19 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

Control tower
None

Airport

Type
General aviation airport
FAA LID
CT21
City
North Stonington
State
Connecticut
Country
United States
Elevation
213 ft
Coordinates
41.4606, -71.8300
Runways
1 physical runway · 2 runway ends
Longest runway
2,004 ft
Weather reporting
Nearest station KWST
TAF
Nearest KGON
Time zone
America/New_York
Sunset in
8h 35m

Run a flight school, FBO, or club here? Embed CT21'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 Sunnyvale Field (CT21)

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 Sunnyvale Field, 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 CT21 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.

Spotted incorrect airport info? ✏️ Suggest an edit

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