St. John's International Airport

CYYT / YYT

St. John's, CA

Last Updated
Jul 4, 01:00Z

Current Weather

Display Units
Aging 1 hour ago
01:00Z

🌙 Night
VFR
Flight Rules
17°C
Temperature
Dewpoint: 17°C
5 kt
250°
15 SM
Visibility
20,000 ft
Ceiling
Above Ground Level
1004 hPa
QNH
Altimeter Setting

Raw METAR

METAR CYYT 040100Z 25005KT 15SM BKN200 17/17 A2965 RMK CI5 SLP042 DENSITY ALT 1200FT

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 461 ft
BKN 20,000 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
20,000 ft
AGL (Above Ground)
20,461 ft AMSL

Weather Briefing

VFR

St. John's International Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 20,000 feet and 15 SM visibility. Note: This observation is 1.1 hours old and conditions may have changed.

Wind Analysis

Winds are from the west-southwest (250°) at 5 knots. Runway 28 is favored with a 4-knot headwind and 3-knot crosswind component.

Visibility & Ceiling

Visibility is 15 SM. The ceiling is 20000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 17°C (63°F) with a dewpoint of 17°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 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: Mist, Light Drizzle, Fog, FCST. Temporary MVFR conditions are forecast between 00:00Z and 03:00Z. There is a 40% probability of LIFR conditions with Mist between 00:00Z and 03:00Z. Temporary LIFR conditions are forecast with Mist between 03:00Z and 07:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. 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.

QNH
1004 hPa
Sea Level Pressure
For altitude above MSL
QFE
989 hPa
Field Pressure
Height above aerodrome (461 ft)
Pressure Alt
739 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,090 ft
ISA Deviation: +2.9°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF CYYT 032340Z 0400/0424 27008KT P6SM SCT030 TEMPO 0400/0403 BKN020 PROB40 0400/0403 2SM BR OVC003 FM040300 26010KT P6SM SCT003 TEMPO 0403/0407 2SM BR OVC003 FM040700 25010KT 5SM BR FEW002 BKN005 BKN080 PROB30 0407/0411 1/2SM -DZ FG VV002 FM041200 27012KT P6SM BKN005 TEMPO 0412/0414 SCT005 FM041400 26012G22KT P6SM FEW015 RMK NXT FCST BY 040600Z
Upcoming Changes (Next 12 Hours)
02:07Z BASE
+0h
VFR 270° 8 kt
Visibility: >6SM
03:00Z FM040300
+1h
VFR 260° 10 kt
Visibility: >6SM
03:00Z TEMPO
+1h
LIFR
Visibility: 2SM
Ceiling: 300 ft
Mist
07:00Z FM040700
+5h
IFR 250° 10 kt
Visibility: 5SM
Ceiling: 500 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
  • • Hover for exact values and timestamps
  • • Click legend items to toggle data series
  • • Zoom and pan for detailed analysis
  • • 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
YYT
02
20
10
28 ✈️
16
34

Runway Information

Runway Length Width Surface Heading Wind Component
02/20 5,028 ft 100 ft ASP 356°
1.4 kt 4.8 kt
106° angle
✈️ 10/28
Active: 28
8,502 ft 200 ft ASP 86°
4.3 kt 2.5 kt
30° angle
16/34 7,005 ft 197 ft ASP 142°
1.5 kt 4.8 kt
108° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - CYYT

10,878 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
48.9%
MVFR
20.6%
IFR
15.4%
LIFR
15.1%

St. John's International Airport is frequently affected by reduced visibility conditions, with VFR weather only 48.9% of the time and IFR/LIFR conditions occurring in 30.5% of observations. Prevailing winds are from the W averaging 15.4 knots, with gusts recorded up to 56 knots. Temperature extremes range from -14°C to 23°C, reflecting significant seasonal variation. Fog is a notable factor, occurring in approximately 19.3% of observations, with visibility below 3 SM in 7.1% of reports. The best months for VFR flying are September, October, July.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 15.4 kt
Maximum Recorded: 56 kt
Calm Winds: 0.5%
Direction Distribution:
E
6.9%
N
12.3%
S
14.2%
W
29%
NE
7.2%
NW
11.1%
SE
7.2%
SW
11.4%

Temperature Range

Average: 3.2°C
Range: -14°C to 23°C
-14°C 23°C

Visibility

Average: 12.8 SM
Below 3 SM: 7.1%
Fog Frequency: 19.3%

Best Months for VFR

September October July

Runway Wind Analysis

Runway 02/20
Favorable wind: 100%
Avg crosswind: 10.3 kt
Runway 10/28
Favorable wind: 100%
Avg crosswind: 8.8 kt
Runway 16/34
Favorable wind: 100%
Avg crosswind: 10.5 kt

Statistics computed from 10,878 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

St. John's International Airport - Airport Information

Airport Details

ICAO Code: CYYT
IATA Code: YYT
Type: large airport
Status: active
Elevation: 461 ft MSL

Location

City: St. John's
Country: CA
Latitude: 47.618599°
Longitude: -52.751900°
Time Zone: Etc/GMT+4

Runway Information

Runway 02/20
Length: 5,028 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 10/28
Length: 8,502 ft
Width: 200 ft
Surface: ASP
ILS: No
Runway 16/34
Length: 7,005 ft
Width: 197 ft
Surface: ASP
ILS: No

About St. John's International Airport

Overview

St. John's International Airport serves as a critical aviation hub in Newfoundland, Canada, located at coordinates 47.618599, -52.751900. Situated at an elevation of 461 feet mean sea level, this large airport provides essential transportation infrastructure for the eastern Canadian region. The airport supports multiple runway configurations that can accommodate a wide range of aircraft operations.

Flying Conditions

The airport's three asphalt runways offer versatile operational capabilities, with lengths ranging from 5,028 to 8,502 feet. Located in an eastern coastal environment, St. John's experiences variable weather conditions typical of the Newfoundland maritime climate. Pilots should anticipate potential rapid weather changes and prepare for potential wind shifts across the airport's multiple runway orientations.

Notable Features

St. John's International Airport features three parallel and intersecting runways (02/20, 10/28, and 16/34), providing multiple approach and departure options. The airport's elevation of 461 feet and coastal location suggest potential terrain and wind considerations for arriving and departing aircraft. Runway surface types are consistently asphalt, supporting reliable ground operations across all runways.

Approach Considerations

With runway headings of 02/20, 10/28, and 16/34, pilots have multiple options for approach and departure based on prevailing wind conditions. The longest runway (10/28 at 8,502 feet) provides the most extensive landing and takeoff capabilities. Pilots should carefully assess current wind direction and runway length when planning approach and departure strategies.

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.