Storm Station
Sign in

John Murtha Johnstown Cambria County Airport, Pennsylvania

Medium airport in Cambria County, Pennsylvania

Air quality

The air at John Murtha Johnstown Cambria County Airport

Index 22, good, led by fine particles. Read at 4 AM from its reporting area, Johnstown (PA), 5 miles off.

22Good
  • Fine particles (PM2.5)22Good4.6 mi
  • Ozone6Good3 ppb4.6 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 27, good.

Smoke, the next 40 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at John Murtha Johnstown Cambria County Airport

0.07 in in the last 24 hours, 0.53 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.07in
Last 3 days
0.53in

Visibility

How far you can see at John Murtha Johnstown Cambria County Airport, the next 40 hours

Mist or haze: visibility falls to 1 miles Fri 4 PM.

FriSat

Airfield

Code
JST
ICAO
KJST
IATA
JST
Field elevation
2,284 ft
Serves
Johnstown
Kind
Medium airport
Scheduled service
Yes
Its own instrument
JST
Wind now
From 220° at 8 mph, read 16 Oct, 04:46

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
05 / 234,387 ft100 ftAsphalt39° / 219°8 mph head, on 23None
15 / 337,004 ft150 ftAsphalt144° / 324°2 mph head, on 158 mph from the right
052315332,000 ftN220° 8 mph
Runways from their surveyed ends, north up, lengths and positions to scale; the rose in the corner is the wind now.

Measured here

What the airfield's own instrument measured, the last 24 hours

Every hour from Johnstown/Cambria (JST), John Murtha Johnstown Cambria County Airport's own instrument, measure by measure, on the field's own clock.

Temperature

64 F at 4 AM; 64 F at its warmest, 4 AM, and 50 F at its coolest, 7 AM Thursday.

Now
64F
4 AM
Highest
64F
4 AM
Lowest
50F
7 AM Thursday
Temperature and Dew point at Johnstown/Cambria, temperature from 49.7 to 64.0, the latest 64.0; dew point from 49.0 to 63.0, the latest 63.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF45505560656 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMTEMPERATUREDEW POINT

How it is measured: Stevenson screen and siting, Field Book FB-INS-009

Humidity and dew point

A dew point of 63 F, the air 97% saturated; the humidity ran from 74% at 11 AM Thursday to 100% at 7 PM Thursday.

Dew point now
63F
4 AM
Humidity now
97%
Humidity, range
74 to 100%
Relative humidity at Johnstown/Cambria, relative humidity from 74 to 100, the latest 97, in per cent.RELATIVE HUMIDITY%7080901006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Humidity variables, Field Book FB-WAT-002

Wind

10 mph from the south southwest at 4 AM; at its strongest 10 mph, 4 AM, with a gust of 20 mph at 3 AM.

Now
10mph
from the south southwest
Strongest
10mph
4 AM
Highest gust
20mph
3 AM
Wind and Gust at Johnstown/Cambria, wind from 4 to 10, the latest 10; gust from 20 to 20, the latest 20, in miles an hour.WIND AND GUSTmph051015206 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMWINDGUST
Wind direction at Johnstown/Cambria, wind direction from 70 to 210, the latest 210, in degrees.WIND DIRECTION°0901802703606 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Coriolis as geometry, Field Book FB-ENG-008

Pressure

29.90 inHg at 4 AM, falling 0.07 inHg over 3 hours; 0.27 inHg lower than a day before.

Now
29.90inHg
4 AM
3 hours
-0.07inHg
falling
24 hours
-0.27inHg
Pressure, altimeter at Johnstown/Cambria, pressure, altimeter from 29.90 to 30.21, the latest 29.90, in inches of mercury.PRESSURE, ALTIMETERinHg29.8029.9030.0030.1030.2030.306 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Hydrostatic balance, Field Book FB-ENG-003

Visibility

Down to 0.2 miles at 8 AM Thursday, under a mile for 1 hour; 8 miles now.

Now
8mi
Lowest
0.2mi
8 AM Thursday
Hours under a mile
1
Visibility at Johnstown/Cambria, visibility from 0.2 to 10.0, the latest 8.0, in miles.VISIBILITYmi02.557.5106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMLIFRIFRMVFRVFR

How it is measured: Fog types, Field Book FB-WAT-020

Cloud base

The lowest cloud base came down to 200 ft at 7 AM Thursday; a base was reported in 23 of the hours.

Lowest base now
-
Lowest in 24 hours
200ft
7 AM Thursday
Hours with a base reported
23
Lowest cloud base at Johnstown/Cambria, lowest cloud base from 200 to 1,500, the latest 300, in feet.LOWEST CLOUD BASEft05001,0001,5006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMLIFRIFRMVFR

How it is measured: Cloud classification, Field Book FB-SKY-001

Precipitation

0.12 in measured in the gauge, the most, 0.05 in, in the hour to 2 AM.

Last 24 hours
0.12in
Wettest hour
0.05in
2 AM
Hours with some
9
Precipitation at Johnstown/Cambria, precipitation from 0.00 to 0.05, the latest 0.01, in inches.PRECIPITATIONin0.000.030.050.070.106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: ASOS, Field Book FB-INS-002

Johnstown/Cambria: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 5 instruments nearest John Murtha Johnstown Cambria County Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.

measured now3 instruments

Johnstown/CambriaJST

At an airfield/0.0 mi away/2,283 ft/1 ft below here

temp, wind, gust, visibility, precip, pressure

SR56 & Babcock MtnPA051

Beside a road/11.3 mi away/2,500 ft/216 ft above here

temp, pavement temp, wind, visibility, precip

Blair Helibase RawsBLHP1

A remote fire weather station/23.5 mi away/1,155 ft/1,129 ft below here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Johnstown 3.9 SEPA-CM-10

In a volunteer observer's own ground/2.0 mi away/2,007 ft/277 ft below here

precip, snowfall, snow depth

EbensburgEBNP1

At a cooperative observer's station/11.9 mi away/1,929 ft/355 ft below here

snowfall, snow depth, precip, high, low

0in

Snow on the ground

Measured at Ebensburg (EBNP1), 11.9 miles from here, read 13 Oct, 08:00. measured daily

Elsewhere in Pennsylvania

24 places, each with its own forecast and its own instruments.

Near John Murtha Johnstown Cambria County Airport

The nearest places, each with its own forecast and the instruments nearest it.

Near John Murtha Johnstown Cambria County Airport