Portland International Jetport

KPWM / PWM

Portland, US

Last Updated
May 15, 07:40Z

Current Weather

Display Units
Fresh 9 min ago
07:40Z

☀️ Day
LIFR
Flight Rules
9°C
Temperature
Dewpoint: 9°C
11 kt
80°
2 SM
Visibility
400 ft
Ceiling
Above Ground Level
1007 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KPWM 150740Z 08011KT 2SM -RA BR OVC004 09/09 A2975 RMK AO2 RAE04B25 P0002 T00890089 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 76 ft
OVC 400 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
400 ft
AGL (Above Ground)
476 ft AMSL

Weather Briefing

LIFR

Portland International Jetport is currently reporting low IFR (LIFR) conditions with overcast skies at 400 feet and 2 SM visibility.

Wind Analysis

Winds are from the east (80°) at 11 knots. Runway 11/29 is favored with a 10-knot headwind and 6-knot crosswind component.

Visibility & Ceiling

Visibility is reduced to 2 SM. IFR conditions prevail and an instrument clearance is required for operations in controlled airspace. The ceiling is very low at 400 feet AGL (overcast), well below circling minimums at most airports.

Temperature & Moisture

Temperature is 9°C (48°F) with a dewpoint of 9°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 23 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: Light Rain, Mist, Mist.

Pilot Recommendations

Current conditions require an instrument rating, IFR-equipped aircraft, and an IFR clearance. Check approach minimums carefully as conditions may be below CAT I ILS minimums. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1007 hPa
Sea Level Pressure
For altitude above MSL
QFE
1004 hPa
Field Pressure
Height above aerodrome (76 ft)
Pressure Alt
264 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -438 ft
ISA Deviation: -5.8°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KPWM 150634Z 1507/1606 07011G16KT 2SM -RA BR OVC004 FM151600 06009KT 5SM -RA BR OVC007 FM151800 12006KT 6SM BR VCSH SCT006 OVC012 FM152200 VRB05KT P6SM FEW008 SCT015 BKN040
Upcoming Changes (Next 12 Hours)
07:48Z BASE
+0h
LIFR 70° 11 kt
Visibility: 2SM
Ceiling: 400 ft
Light Rain, Mist
16:00Z FM151600
+9h
IFR 60° 9 kt
Visibility: 5SM
Ceiling: 700 ft
Light Rain, Mist
18:00Z FM151800
+11h
IFR 120° 6 kt
Visibility: 6SM
Ceiling: 1,200 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
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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
PWM
11 ✈️
29
18
36

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 11/29
Active: 11
7,200 ft 150 ft ASP 95°
9.5 kt 5.5 kt
30° angle
18/36 5,001 ft 150 ft ASP 163°
1.3 kt 10.9 kt
83° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KPWM

6,762 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
73.4%
MVFR
11.9%
IFR
8.8%
LIFR
5.9%

Portland International Jetport typically experiences VFR conditions 73.4% of the time, though instrument-rated pilots will find IFR weather present approximately 14.7% of observations. Prevailing winds are from the W averaging 7.7 knots. Calm conditions occur 15.7% of the time. Temperature extremes range from -21°C to 29°C, reflecting significant seasonal variation. The best months for VFR flying are February, September, November.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 7.7 kt
Maximum Recorded: 27 kt
Calm Winds: 15.7%
Direction Distribution:
N
15.8%
NE
5.1%
E
7.3%
SE
3.3%
S
13.2%
SW
9.6%
W
16.2%
NW
13.8%

Temperature Range

Average: 2.8°C
Range: -21°C to 29°C
-21°C 29°C

Visibility

Average: 9 SM
Below 3 SM: 4.9%
Fog Frequency: 2.7%

Best Months for VFR

February September November

Runway Wind Analysis

Runway 11/29
Favorable wind: 100%
Avg crosswind: 4.9 kt
Runway 18/36
Favorable wind: 100%
Avg crosswind: 4.5 kt

Statistics computed from 6,762 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.

Portland International Jetport - Airport Information

Airport Details

ICAO Code: KPWM
IATA Code: PWM
Type: large airport
Status: active
Elevation: 76 ft MSL

Location

City: Portland
Country: US
Latitude: 43.646198°
Longitude: -70.309303°
Time Zone: Etc/GMT+5

Runway Information

Runway 11/29
Length: 7,200 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 18/36
Length: 5,001 ft
Width: 150 ft
Surface: ASP
ILS: No

About Portland International Jetport

Overview

Portland International Jetport serves as a critical aviation hub in southern Maine, located in the city of Portland. The airport supports both commercial passenger and general aviation operations, situated at an elevation of 76 feet mean sea level. Its strategic coastal location provides essential transportation infrastructure for the greater Portland metropolitan area.

Flying Conditions

The airport experiences typical New England maritime weather patterns with significant seasonal variations. Winter months can present challenging conditions with potential snow and low visibility, while summer periods generally offer more stable flying conditions. Pilots should anticipate potential wind shifts and maritime-influenced meteorological dynamics given the airport's proximity to the Atlantic coast.

Notable Features

Portland International Jetport features two paved runways: Runway 11/29 at 7,200 feet and Runway 18/36 at 5,001 feet. The dual runway configuration provides operational flexibility for different wind conditions and aircraft types. Its location near the coast suggests potential for rapidly changing wind conditions that pilots must carefully monitor during approach and departure.

Approach Considerations

Runway selection will primarily depend on prevailing wind direction, with the longer 7,200-foot Runway 11/29 offering more landing options for larger aircraft. The airport's coastal positioning means wind can significantly influence approach strategies, particularly during transitional seasonal periods. Pilots should review current meteorological data and be prepared for potential crosswind landing requirements.

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.