Portsmouth International at Pease Airport

KPSM / PSM

Portsmouth, US

Last Updated
Apr 22, 20:55Z

Current Weather

Display Units
Recent 55 min ago
20:55Z

🌙 Night
MVFR
Flight Rules
8°C
Temperature
Dewpoint: 2°C
10 kt
210°
10 SM
Visibility
2,700 ft
Ceiling
Above Ground Level
1017 hPa
QNH
Altimeter Setting

Raw METAR

METAR KPSM 222055Z 21010KT 10SM OVC027 08/02 A3004 RMK AO2A SLP176 T00840022 57023

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 100 ft
OVC 2,700 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
2,700 ft
AGL (Above Ground)
2,800 ft AMSL

Weather Briefing

MVFR

Portsmouth International at Pease Airport is currently reporting marginal VFR (MVFR) conditions with overcast skies at 2,700 feet and 10 SM visibility.

Wind Analysis

Winds are from the south-southwest (210°) at 10 knots. Runway 16/34 is favored with a 6-knot headwind and 8-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 2700 feet AGL (overcast), placing conditions in the MVFR category.

Temperature & Moisture

Temperature is 8°C (46°F) with a dewpoint of 2°C, indicating moderate moisture conditions.

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

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further.

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

QNH
1017 hPa
Sea Level Pressure
For altitude above MSL
QFE
1014 hPa
Field Pressure
Height above aerodrome (100 ft)
Pressure Alt
-13 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -829 ft
ISA Deviation: -6.8°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KPSM 221720Z 2218/2318 18007KT P6SM OVC025 FM230100 21005KT P6SM OVC012 FM231000 27005KT P6SM BKN025 FM231400 30010KT P6SM SCT030
Upcoming Changes (Next 12 Hours)
21:49Z BASE
+0h
MVFR 180° 7 kt
Visibility: >6SM
Ceiling: 2,500 ft
01:00Z FM230100
+4h
MVFR 210° 5 kt
Visibility: >6SM
Ceiling: 1,200 ft

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
PSM
16 ✈️
34

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 16/34
Active: 16
11,321 ft 150 ft PEM 149°
6.4 kt 7.7 kt
50° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KPSM

5,922 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
73.6%
MVFR
11.7%
IFR
8.2%
LIFR
6.5%

Portsmouth International at Pease Airport typically experiences VFR conditions 73.6% 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
9.6%
NE
5.5%
E
4.7%
SE
7.8%
S
7.6%
SW
13%
W
24.2%
NW
12.4%

Temperature Range

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

Visibility

Average: 8.9 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 5,922 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.