Portsmouth International at Pease Airport

KPSM / PSM

Portsmouth, US

Last Updated
Apr 23, 06:55Z

Current Weather

Display Units
Fresh 29 min ago
06:55Z

☀️ Day
VFR
Flight Rules
6°C
Temperature
Dewpoint: 4°C
3 kt
200°
10 SM
Visibility
7,000 ft
Ceiling
Above Ground Level
1013 hPa
QNH
Altimeter Setting

Raw METAR

METAR KPSM 230655Z 20003KT 10SM FEW031 BKN070 06/04 A2991 RMK AO2A RAB00E27 SLP132 P0000 T00570042

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 100 ft
FEW 3,100 ft AGL
BKN 7,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
3,100 ft
AGL (Above Ground)
3,200 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
7,000 ft
AGL (Above Ground)
7,100 ft AMSL

Weather Briefing

VFR

Portsmouth International at Pease Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 7,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the south-southwest (200°) at 3 knots.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 7000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 6°C (43°F) with a dewpoint of 4°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. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions.

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
1013 hPa
Sea Level Pressure
For altitude above MSL
QFE
1010 hPa
Field Pressure
Height above aerodrome (100 ft)
Pressure Alt
108 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -948 ft
ISA Deviation: -8.8°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KPSM 230520Z 2306/2406 19005KT P6SM SCT010 OVC028 FM231200 28004KT P6SM SCT040 FM231400 31012G26KT P6SM FEW100 FM240000 33005KT P6SM SKC
Upcoming Changes (Next 12 Hours)
07:23Z BASE
+0h
MVFR 190° 5 kt
Visibility: >6SM
Ceiling: 2,800 ft
12:00Z FM231200
+5h
VFR 280° 4 kt
Visibility: >6SM
14:00Z FM231400
+7h
VFR 310° 12 kt
Visibility: >6SM

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
PSM
16 ✈️
34

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 16/34
Active: 16
11,321 ft 150 ft PEM 149°
2.3 kt 1.9 kt
40° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KPSM

5,946 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
73.5%
MVFR
11.8%
IFR
8.2%
LIFR
6.5%

Portsmouth International at Pease Airport typically experiences VFR conditions 73.5% 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, with gusts recorded up to 31 knots. Calm conditions occur 15.2% of the time. Temperature extremes range from -18°C to 30°C, reflecting significant seasonal variation. The best months for VFR flying are September, February, November.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 7.7 kt
Maximum Recorded: 31 kt
Calm Winds: 15.2%
Direction Distribution:
N
9.5%
NE
5.5%
E
4.7%
SE
7.9%
S
7.8%
SW
13%
W
24.1%
NW
12.3%

Temperature Range

Average: 3.7°C
Range: -18°C to 30°C
-18°C 30°C

Visibility

Average: 9 SM
Below 3 SM: 4.7%
Fog Frequency: 3.5%

Best Months for VFR

September February November

Runway Wind Analysis

Runway 16/34
Favorable wind: 100%
Avg crosswind: 5.2 kt

Statistics computed from 5,946 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Portsmouth International at Pease Airport - Airport Information

Airport Details

ICAO Code: KPSM
IATA Code: PSM
Type: medium airport
Status: active
Elevation: 100 ft MSL

Location

City: Portsmouth
Country: US
Latitude: 43.077900°
Longitude: -70.823303°
Time Zone: Etc/GMT+5

Runway Information

Runway 16/34
Length: 11,321 ft
Width: 150 ft
Surface: PEM
ILS: No

About Portsmouth International at Pease Airport

Overview

Portsmouth International at Pease Airport serves the New Hampshire seacoast region as a strategic medium-sized airport located near Portsmouth. Situated at 100 feet mean sea level with coordinates 43.077900, -70.823303, the airport provides critical aviation infrastructure for commercial, military, and general aviation operations in northeastern Massachusetts and southern New Hampshire.

Flying Conditions

Weather conditions at KPSM demonstrate significant variability, with Visual Flight Rules (VFR) predominating at 75.5% of observations. Pilots can expect westerly winds averaging 7.6 knots, with temperature ranges from -14°C to 30°C. Annual visibility typically remains excellent at 9.1 statute miles, though occasional reduced conditions occur, with 3.4% of observations showing visibility below 3 statute miles.

Notable Features

The airport's primary runway 16/34 offers an extensive 11,321-foot surface, providing substantial operational flexibility. Wind data indicates 100% runway favorability, with an average crosswind of just 5.3 knots. Calm wind conditions are present in 17.1% of observations, which contributes to predictable flight planning.

Approach Considerations

Seasonal considerations suggest September, November, and December offer the most consistently favorable VFR conditions for pilots. With prevailing westerly winds and a long runway, most approach and departure operations should find comfortable operational parameters. Pilots should anticipate potential instrument meteorological conditions during approximately 24.5% of observations, which include IFR and LIFR classifications.

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.