Montreal International (Mirabel) Airport

CYMX / YMX

Montréal, CA

Last Updated
Mar 15, 10:00Z

Current Weather

Display Units
Recent 49 min ago
10:00Z

☀️ Day
VFR
Flight Rules
-12°C
Temperature
Dewpoint: -14°C
0 kt
25 SM
Visibility
Ceiling
Unlimited
1031 hPa
QNH
Altimeter Setting

Raw METAR

METAR CYMX 151000Z 00000KT 25SM FEW170 M12/M14 A3046 RMK AC1 SLP321

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 270 ft
FEW 17,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
17,000 ft
AGL (Above Ground)
17,270 ft AMSL

Weather Briefing

VFR

Montreal International (Mirabel) Airport is currently reporting visual flight rules (VFR) conditions with few clouds at 17,000 feet and 25 SM visibility.

Wind Analysis

Winds are calm, presenting no crosswind concerns for any runway.

Visibility & Ceiling

Visibility is 25 SM. No ceiling exists. Cloud layers reported: few at 17,000 ft.

Temperature & Moisture

Temperature is -12°C (10°F) with a dewpoint of -14°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely. Temperatures are at or below freezing. Check for icing conditions and ensure aircraft anti-ice/de-ice systems are operational if required.

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 Snow, FCST. Expect variable wind speeds ranging from 3 to 15 knots.

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
1031 hPa
Sea Level Pressure
For altitude above MSL
QFE
1022 hPa
Field Pressure
Height above aerodrome (270 ft)
Pressure Alt
-263 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -3,438 ft
ISA Deviation: -26.5°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF CYMX 150540Z 1506/1606 25005KT P6SM SKC FM150800 VRB03KT P6SM BKN200 BECMG 1510/1512 06006KT FM151500 08006KT P6SM OVC080 FM152100 07012KT 3/4SM -SHSN BKN020 OVC040 FM160000 09012G22KT P6SM BKN060 OVC160 FM160400 12015G25KT P6SM OVC040 RMK NXT FCST BY 151200Z
Upcoming Changes (Next 12 Hours)
10:48Z BASE
+0h
VFR 250° 5 kt
Visibility: >6SM
15:00Z FM151500
+5h
VFR 80° 6 kt
Visibility: >6SM
Ceiling: 8,000 ft
21:00Z FM152100
+11h
MVFR 70° 12 kt
Visibility: 3/4SM
Ceiling: 2,000 ft
Light Showers Snow

24-Hour Weather Evolution

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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
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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
YMX
06
24
11
29

Runway Information

Runway Length Width Surface Heading Wind Component
06/24 12,000 ft 200 ft CON 45°
0.0 kt 0.0 kt
45° angle
11/29 8,852 ft 200 ft CON 98°
0.0 kt 0.0 kt
98° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - CYMX

5,084 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
65.7%
MVFR
19.7%
IFR
10.3%
LIFR
4.3%

Montreal International (Mirabel) Airport typically experiences VFR conditions 65.7% of the time, though instrument-rated pilots will find IFR weather present approximately 14.6% of observations. Prevailing winds are from the W averaging 5.6 knots. Calm conditions occur 10.6% of the time. Temperature extremes range from -29°C to 27°C, reflecting significant seasonal variation. Low visibility conditions (below 3 SM) occur in 5.7% of weather observations. The best months for VFR flying are September, October, February.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 5.6 kt
Maximum Recorded: 18 kt
Calm Winds: 10.6%
Direction Distribution:
N
5.7%
NE
21.3%
E
4.3%
SE
1.2%
S
3.4%
SW
24.4%
W
25%
NW
4.2%

Temperature Range

Average: -2.4°C
Range: -29°C to 27°C
-29°C 27°C

Visibility

Average: 22.1 SM
Below 3 SM: 5.7%
Fog Frequency: 2.9%

Best Months for VFR

September October February

Runway Wind Analysis

Runway 06/24
Favorable wind: 100%
Avg crosswind: 1.8 kt
Runway 11/29
Favorable wind: 100%
Avg crosswind: 3.9 kt

Statistics computed from 5,084 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

Montreal International (Mirabel) Airport - Airport Information

Airport Details

ICAO Code: CYMX
IATA Code: YMX
Type: medium airport
Status: active
Elevation: 270 ft MSL

Location

City: Montréal
Country: CA
Latitude: 45.679501°
Longitude: -74.038696°
Time Zone: Etc/GMT+5

Runway Information

Runway 06/24
Length: 12,000 ft
Width: 200 ft
Surface: CON
ILS: No
Runway 11/29
Length: 8,852 ft
Width: 200 ft
Surface: CON
ILS: No

About Montreal International (Mirabel) Airport

Overview

Montreal International (Mirabel) Airport serves the Greater Montreal region as a strategic medium-sized airport located northwest of Montreal. Situated at 270 feet above mean sea level, the airport provides critical aviation infrastructure for the Quebec area. Its two substantial runways support diverse aviation operations across commercial, cargo, and potential general aviation segments.

Flying Conditions

Pilots can expect predominantly favorable flying conditions, with 64.8% of observations reporting VFR conditions. The airport experiences significant seasonal temperature variation, ranging from -29°C to 27°C, with an average temperature of 0°C. Wind patterns are consistently from the west (270°) at an average of 5.5 knots, with calm conditions occurring 12.1% of the time and maximum gusts reaching 18 knots.

Notable Features

The airport features two concrete runways: a primary 12,000-foot runway (06/24) and a secondary 8,852-foot runway (11/29). Both runways demonstrate excellent wind alignment, with 100% favorable wind coverage. Crosswind conditions are minimal, averaging 1.9 knots on runway 06/24 and 3.9 knots on runway 11/29, which provides flexible operational capabilities for arriving and departing aircraft.

Approach Considerations

Visibility averaging 21.9 statute miles supports reliable approaches, though pilots should be prepared for occasional reduced conditions. September, October, and December offer the most consistent VFR conditions. Low IFR and LIFR conditions occur in 15.5% of observations, primarily during winter months. Pilots should anticipate potential reduced visibility scenarios, with fog present in approximately 3% of observations.

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.