John Murtha Johnstown Cambria County Airport

KJST / JST

Johnstown, US

Last Updated
Jul 4, 16:54Z

Current Weather

Display Units
Recent 53 min ago
16:54Z

☀️ Day
VFR
Flight Rules
29°C
Temperature
Dewpoint: 19°C
7 kt
260°
10 SM
Visibility
Ceiling
Unlimited
1019 hPa
QNH
Altimeter Setting

Raw METAR

METAR KJST 041654Z AUTO 26007KT 210V290 10SM CLR 29/19 A3010 RMK AO2 SLP172 T02890194

Weather Briefing

VFR

John Murtha Johnstown Cambria County Airport is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are from the west (260°) at 7 knots. Runway 28 is favored with a 7-knot headwind and 2-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 29°C (84°F) with a dewpoint of 19°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. Expected weather includes: Thunderstorm Rain, Mist. There is a 30% probability of MVFR conditions with Thunderstorm Rain between 21:00Z and 03:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. 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
1019 hPa
Sea Level Pressure
For altitude above MSL
QFE
943 hPa
Field Pressure
Height above aerodrome (2,284 ft)
Pressure Alt
2,112 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 4,340 ft (High - Reduced Performance)
ISA Deviation: +18.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KJST 041128Z 0412/0512 23007KT P6SM SCT150 FM041500 27008KT P6SM SCT050 PROB30 0421/0503 3SM TSRA BKN050CB FM050300 24005KT 6SM BR BKN100
Upcoming Changes (Next 12 Hours)
17:46Z BASE
+0h
VFR 230° 7 kt
Visibility: >6SM
21:00Z PROB30
+4h
MVFR
Visibility: 3SM
Ceiling: 5,000 ft
Thunderstorm Rain
03:00Z FM050300
+10h
VFR 240° 5 kt
Visibility: 6SM
Ceiling: 10,000 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
JST
05
23
10
28 ✈️
15
33

Runway Information

Runway Length Width Surface Heading Wind Component
05/23 4,386 ft 100 ft ASP 39°
5.3 kt 4.6 kt
139° angle
✈️ 10/28
Active: 28
3,700 ft 100 ft ASP 87°
6.6 kt 2.4 kt
20° angle
15/33 7,003 ft 150 ft ASP 144°
3.1 kt 6.3 kt
116° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KJST

10,696 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
49.2%
MVFR
29.2%
IFR
12.8%
LIFR
8.7%

John Murtha Johnstown Cambria County Airport is frequently affected by reduced visibility conditions, with VFR weather only 49.2% of the time and IFR/LIFR conditions occurring in 21.5% of observations. Prevailing winds are from the W averaging 9.6 knots, with gusts recorded up to 38 knots. Temperature extremes range from -22°C to 30°C, reflecting significant seasonal variation. Low visibility conditions (below 3 SM) occur in 5.8% of weather observations. The best months for VFR flying are September, July, October.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 9.6 kt
Maximum Recorded: 38 kt
Calm Winds: 4.3%
Direction Distribution:
E
4%
N
3.2%
S
11.8%
W
36.1%
NE
2.6%
NW
13.2%
SE
6.6%
SW
18.3%

Temperature Range

Average: 5.5°C
Range: -22°C to 30°C
-22°C 30°C

Visibility

Average: 8.5 SM
Below 3 SM: 5.8%
Fog Frequency: 5.1%

Best Months for VFR

September July October

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 6.1 kt
Runway 10/28
Favorable wind: 100%
Avg crosswind: 4.6 kt
Runway 15/33
Favorable wind: 100%
Avg crosswind: 6.7 kt

Statistics computed from 10,696 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

John Murtha Johnstown Cambria County Airport - Airport Information

Airport Details

ICAO Code: KJST
IATA Code: JST
Type: medium airport
Status: active
Elevation: 2,284 ft MSL

Location

City: Johnstown
Country: US
Latitude: 40.316101°
Longitude: -78.833900°
Time Zone: Etc/GMT+5

Runway Information

Runway 05/23
Length: 4,386 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 10/28
Length: 3,700 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 15/33
Length: 7,003 ft
Width: 150 ft
Surface: ASP
ILS: No

About John Murtha Johnstown Cambria County Airport

Overview

John Murtha Johnstown Cambria County Airport serves the Johnstown region in Pennsylvania, providing a critical medium-sized airport facility for regional aviation operations. Located at an elevation of 2,284 feet MSL, the airport offers three asphalt runways with varying lengths, accommodating diverse aircraft types and operational requirements.

Flying Conditions

Weather conditions at KJST demonstrate significant variability, with visual flight rules (VFR) prevailing 47.3% of the time and marginal VFR conditions occurring 31.6% of observations. Wind patterns predominantly originate from the west at an average of 10 knots, with temperatures ranging from -21°C to 27°C and average visibility around 8.4 statute miles. Pilots should anticipate the most favorable visual flying conditions during September, October, and November.

Notable Features

The airport features three runways: 05/23 (4,386 ft), 10/28 (3,700 ft), and 15/33 (7,003 ft), providing multiple landing options for different wind conditions and aircraft capabilities. All three runways demonstrate 100% favorable wind alignment, with relatively low average crosswind components ranging from 4.6 to 7.5 knots. The airport's higher elevation and geographic location suggest potential terrain and atmospheric considerations for approach and departure.

Approach Considerations

Given the predominant westerly winds, pilots should be prepared for wind considerations during approaches and landings. The longest runway (15/33 at 7,003 ft) offers the most flexibility for larger aircraft and challenging conditions. Statistical data indicates potential challenges with reduced visibility, with 5.7% of observations showing visibility below 3 statute miles and 6.3% experiencing fog conditions.

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.