Storm Station
Sign in

Johnston Regional Airport, North Carolina

Medium airport in Johnston County, North Carolina

Air quality

The air at Johnston Regional Airport

Index 57, moderate, led by fine particles. Read at 11 PM from its reporting area, Johnston County (NC), 2 miles off.

57Moderate
  • Fine particles (PM2.5)57Moderate5.4 mi
  • Ozone24Good25 ppb5.4 mi
  • Coarse particles (PM10)-24.2 mi
  • Nitrogen dioxide3Good3.2 ppb24.2 mi
  • Sulfur dioxide0Good0 ppb24.2 mi
  • Carbon monoxide-0.2 ppm24.2 mi

The days ahead

Highest 58, moderate, today, led by ozone. Yesterday measured 56, moderate.

Smoke, the next 46 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 28 or under.

FriSat

Precipitation

What has fallen at Johnston Regional Airport

None in the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Johnston Regional Airport, the next 46 hours

Mist or haze: visibility falls to 2 miles Sat 7 AM.

FriSat

Airfield

Code
JNX
ICAO
KJNX
IATA
-
Field elevation
164 ft
Serves
Smithfield
Kind
Medium airport
Scheduled service
No
Its own instrument
JNX
Wind now
Calm, read 15 Oct, 23:15

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
03 / 215,500 ft100 ftAsphalt30° / 210°CalmCalm
03212,000 ftN
Runways from their surveyed ends, north up, lengths and positions to scale.

Measured here

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

Every hour from Smithfield (JNX), Johnston Regional Airport's own instrument, measure by measure, on the field's own clock.

Temperature

72 F at 11 PM; 90 F at its warmest, 4 PM, and 59 F at its coolest, 6 AM.

Now
72F
11 PM
Highest
90F
4 PM
Lowest
59F
6 AM
Temperature and Dew point at Smithfield, temperature from 59.0 to 90.2, the latest 71.6; dew point from 59.0 to 69.8, the latest 68.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF5060708090100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 68 F, the air 88% saturated; the humidity ran from 43% at 4 PM to 100% at 3 AM.

Dew point now
68F
11 PM
Humidity now
88%
Humidity, range
43 to 100%
Relative humidity at Smithfield, relative humidity from 43 to 100, the latest 88, in per cent.RELATIVE HUMIDITY%406080100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

2 mph at 11 PM; at its strongest 5 mph, 8 PM, and no gust reported.

Now
2mph
Strongest
5mph
8 PM
Highest gust
-
none reported
Wind at Smithfield, wind from 0 to 5, the latest 2, in miles an hour.WINDmph0246Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM
Wind direction at Smithfield, wind direction from 50 to 300, the latest 80, in degrees.WIND DIRECTION°090180270360Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Pressure

30.07 inHg at 11 PM, steady over 3 hours; 0.03 inHg higher than a day before.

Now
30.07inHg
11 PM
3 hours
+0.00inHg
steady
24 hours
+0.03inHg
Pressure, altimeter at Smithfield, pressure, altimeter from 30.03 to 30.11, the latest 30.07, in inches of mercury.PRESSURE, ALTIMETERinHg30.0230.0430.0630.0830.1030.12Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Visibility

Down to 2 miles at 6 AM; 10 miles or more now.

Now
10+mi
Lowest
2mi
6 AM
Hours under a mile
0
Visibility at Smithfield, visibility from 2.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.510Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 900 ft at 11 PM; a base was reported in 2 of the hours.

Lowest base now
900ft
Lowest in 24 hours
900ft
11 PM
Hours with a base reported
2
Lowest cloud base at Smithfield, lowest cloud base from 900 to 1,100, the latest 900, in feet.LOWEST CLOUD BASEft9009501,0001,0501,100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMIFRMVFR

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

Precipitation

None measured in the gauge in the last 24 hours.

Last 24 hours
0.00in
Wettest hour
-
Hours with some
0

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

Smithfield: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 4 instruments nearest Johnston Regional 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 now2 instruments

SmithfieldJNX

At an airfield/0.0 mi away/164 ft/level with here

temp, wind, gust, visibility, precip, pressure

Goldsboro RAWSGBON7

A remote fire weather station/22.1 mi away/82 ft/82 ft below here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Smithfield 3.8 NWNC-JH-71

In a volunteer observer's own ground/0.4 mi away/155 ft/9 ft below here

precip, snowfall, snow depth

SmithfieldSMIN7

At a cooperative observer's station/3.0 mi away/128 ft/36 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in North Carolina

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

Near Johnston Regional Airport

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

Near Johnston Regional Airport